Abstract

We will briefly review the present status of optical topography and then discuss the method of improving practicality, i.e., the signal-to-noise (S/N) ratio and the spatial resolution in observations of higher-order brain functions. The optimum wavelength pair improved the S/N ratio sixfold for deoxyhemoglobin, and new configurations of light irradiation and detection positions doubled the spatial resolution. We also report on developing application fields of optical topography. This modality will bridge the gap between natural sciences, neuroscience, and pedagogy, and show actual real-time brain activity.

© 2003 Optical Society of America

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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
  40. R. P. Kennan, D. Kim, A. Maki, H. Koizumi, R. T. Constable, “Non-invasive assessment of language lateralization by transcranial near infrared optical topography and functional MRI,” Hum. Brain Mapp. 16, 183–189 (2002).
    [CrossRef] [PubMed]
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  44. M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

2002 (5)

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

H. Kato, M. Izumiyama, H. Koizumi, A. Takahashi, Y. Itoyama, “Near-infrared spectroscopic topography as a tool to monitor motor reorganization after hemiparetic stroke: a comparison with functional MRI,” Stroke 33, 2032–2036 (2002).
[CrossRef] [PubMed]

R. P. Kennan, S. G. Horovitz, A. Maki, Y. Yamashita, H. Koizumi, J. C. Gore, “Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG,” Neuroimage 16, 587–592 (2002).
[CrossRef] [PubMed]

R. P. Kennan, D. Kim, A. Maki, H. Koizumi, R. T. Constable, “Non-invasive assessment of language lateralization by transcranial near infrared optical topography and functional MRI,” Hum. Brain Mapp. 16, 183–189 (2002).
[CrossRef] [PubMed]

2001 (3)

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

Y. Yamashita, A. Maki, H. Koizumi, “Wavelength dependence of the precision of noninvasive optical measurement of oxy-, deoxy-, and total-hemoglobin concentration,” Med. Phys. 28, 1108–1114 (2001).
[CrossRef] [PubMed]

2000 (5)

Y. Ito, R. Kennan, E. Watanabe, H. Koizumi, “Assessment of heating effects in skin during continuous wave near infrared spectroscopy,” J. Biomed. Opt. 5, 383–390 (2000).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Noninvasive cerebral blood volume measurement during seizures using multichannel near infrared spectroscopic topography,” J. Biomed. Opt. 5, 287–290 (2000).
[CrossRef] [PubMed]

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

G. Taga, Y. Konishi, A. Maki, T. Tachibana, M. Fujiwara, H. Koizumi, “Spontaneous oscillation of oxy- and deoxy- hemoglobin changes with a phase difference throughout the occipital cortex of newborn infants observed using non-invasive optical topography,” Neurosci. Lett. 282, 101–104 (2000).
[CrossRef] [PubMed]

1999 (2)

H. Sato, T. Takeuchi, K. L. Sakai, “Temporal cortex activation during speech recognition: an optical topography,” Cognition 73, 55–66 (1999).
[CrossRef]

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

1998 (3)

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, “Non-invasive cerebral blood volume measurement during seizures using multi-channel near infrared spectroscopic topography,” J. Epilepsy 11, 335–340 (1998).
[CrossRef]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

1997 (1)

K. Kogure, Y. Yamashita, A. Maki, H. Itagaki, M. Izumiyama, H. Koizumi, “Functional near-infrared spectrography (fNIR) in the neurology ward,” J. Cereb. Blood Flow Metab. 17(S1), S555 (1997).

1996 (4)

Y. Yamashita, A. Maki, H. Koizumi, “Near-infrared topographic measurement system: imaging of absorbers localized in a scattering medium,” Rev. Sci. Instrum. 67, 730–732 (1996).
[CrossRef]

A. Maki, Y. Yamashita, E. Watanabe, H. Koizumi, “Visualizing human motor activity by using non-invasive optical topography,” Front Med. Biol. Eng. 7, 285–297 (1996).
[PubMed]

E. Watanabe, Y. Yamashita, A. Maki, Y. Ito, H. Koizumi, “Non-invasive functional mapping with multi-channel near infra-red spectroscopic topography in humans,” Neurosci. Lett. 205, 41–44 (1996).
[CrossRef] [PubMed]

B. Chance, K. Kang, L. He, H. Liu, S. Zhou, “Precision localization of hidden absorbers in body tissues with phased-array optical system,” Rev. Sci. Instrum. 67, 4324–4332 (1996).
[CrossRef]

1995 (1)

A. Maki, Y. Yamashita, Y. Ito, E. Watanabe, Y. Mayanagi, H. Koizumi, “Spatial and temporal analysis of human motor activity using noninvasive NIR topography,” Med. Phys. 22, 1997–2005 (1995).
[CrossRef] [PubMed]

1993 (4)

T. Kato, A. Kamei, S. Takahashi, T. Ozaki, “Human visual cortical function during photic stimulation monitoring by means of near-infrared spectroscopy,” J. Cereb. Blood Flow Metab. 13, 516–520 (1993).
[CrossRef] [PubMed]

Y. Hoshi, M. Tamura, “Detection of dynamic changes in cerebral oxygenation coupled to neuronal function during mental work in man,” Neurosci. Lett. 150, 5–8 (1993).
[CrossRef] [PubMed]

A. Villringer, J. Planck, C. Hock, L. Schleinkofer, U. Dirnagl, “Near infrared spectroscopy (NIRS): a new tool to study hemodynamic changes during activation of brain function in human adults,” Neurosci. Lett. 154, 101–104 (1993).
[CrossRef] [PubMed]

B. Chance, Z. Zhuang, C. Unah, C. Alter, L. Lipton, “Cognition-activated low-frequency modulation of light absorption in human brain,” Proc. Acad. Sci. USA 90, 3770–3774 (1993).
[CrossRef]

1991 (1)

F. Kawaguchi, Y. Yamashita, Y. Ito, A. Maki, H. Takeuchi, “Near infrared optical CT image of rat brain,” Med. Biol. Eng. Comput. 29(S2), 959 (1991).

1988 (1)

D. T. Delpy, M. Cope, P. Van Zee, S. Arridge, S. Wray, J. Wyatt, “Estimation of optical path-length through tissue from direct time of flight measurement,” Phys. Med. Biol. 33, 1433–1442 (1988).
[CrossRef] [PubMed]

1977 (1)

F. F. Jobsis, “Non-unvasive infrared monitoring of cerebral and myocardial oxygen sufficiency and circulatory parameters,” Science 198, 1264–1267 (1977).
[CrossRef]

1942 (1)

G. A. Millikan, “The oximeter, an instrument for measuring continuously the oxygen saturation of arterial blood in man,” Rev. Sci. Instrum. 13, 434–444 (1942).
[CrossRef]

Alter, C.

B. Chance, Z. Zhuang, C. Unah, C. Alter, L. Lipton, “Cognition-activated low-frequency modulation of light absorption in human brain,” Proc. Acad. Sci. USA 90, 3770–3774 (1993).
[CrossRef]

Arridge, S.

D. T. Delpy, M. Cope, P. Van Zee, S. Arridge, S. Wray, J. Wyatt, “Estimation of optical path-length through tissue from direct time of flight measurement,” Phys. Med. Biol. 33, 1433–1442 (1988).
[CrossRef] [PubMed]

Atsumi, Y.

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Chance, B.

B. Chance, K. Kang, L. He, H. Liu, S. Zhou, “Precision localization of hidden absorbers in body tissues with phased-array optical system,” Rev. Sci. Instrum. 67, 4324–4332 (1996).
[CrossRef]

B. Chance, Z. Zhuang, C. Unah, C. Alter, L. Lipton, “Cognition-activated low-frequency modulation of light absorption in human brain,” Proc. Acad. Sci. USA 90, 3770–3774 (1993).
[CrossRef]

B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfield, G. Holtom, “Phase modulation system for dual wavelength difference spectroscopy of hemoglobin deoxygenation in tissues,” in Time-Resolved Laser Spectroscopy in Biochemistry II, J. R. Lakowicz, ed., Proc. SPIE1204, 481–491 (1990).
[CrossRef]

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

Constable, R. T.

R. P. Kennan, D. Kim, A. Maki, H. Koizumi, R. T. Constable, “Non-invasive assessment of language lateralization by transcranial near infrared optical topography and functional MRI,” Hum. Brain Mapp. 16, 183–189 (2002).
[CrossRef] [PubMed]

Cope, M.

D. T. Delpy, M. Cope, P. Van Zee, S. Arridge, S. Wray, J. Wyatt, “Estimation of optical path-length through tissue from direct time of flight measurement,” Phys. Med. Biol. 33, 1433–1442 (1988).
[CrossRef] [PubMed]

Dehaene-Lambertz, G.

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

Delpy, D. T.

D. T. Delpy, M. Cope, P. Van Zee, S. Arridge, S. Wray, J. Wyatt, “Estimation of optical path-length through tissue from direct time of flight measurement,” Phys. Med. Biol. 33, 1433–1442 (1988).
[CrossRef] [PubMed]

Dirnagl, U.

A. Villringer, J. Planck, C. Hock, L. Schleinkofer, U. Dirnagl, “Near infrared spectroscopy (NIRS): a new tool to study hemodynamic changes during activation of brain function in human adults,” Neurosci. Lett. 154, 101–104 (1993).
[CrossRef] [PubMed]

Fallgatter, A. J.

M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

Frith, U.

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

Fujiwara, M.

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

G. Taga, Y. Konishi, A. Maki, T. Tachibana, M. Fujiwara, H. Koizumi, “Spontaneous oscillation of oxy- and deoxy- hemoglobin changes with a phase difference throughout the occipital cortex of newborn infants observed using non-invasive optical topography,” Neurosci. Lett. 282, 101–104 (2000).
[CrossRef] [PubMed]

Fukuda, M.

M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

Gao, G.

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

Gore, J. C.

R. P. Kennan, S. G. Horovitz, A. Maki, Y. Yamashita, H. Koizumi, J. C. Gore, “Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG,” Neuroimage 16, 587–592 (2002).
[CrossRef] [PubMed]

Greenfield, R.

B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfield, G. Holtom, “Phase modulation system for dual wavelength difference spectroscopy of hemoglobin deoxygenation in tissues,” in Time-Resolved Laser Spectroscopy in Biochemistry II, J. R. Lakowicz, ed., Proc. SPIE1204, 481–491 (1990).
[CrossRef]

Haida, M.

Y. Shinohara, M. Haida, N. Shinohara, F. Kawaguchi, Y. Itoh, H. Koizumi, “Towards near-infrared imaging of the brain,” in Optical Imaging of Brain Function and Metabolism II, A. Villringer, U. Dirgnal, eds. (Plenum, New York, 1997), pp. 85–89.
[CrossRef]

M. Haida, Y. Shinohara, Y. Ito, T. Yamamoto, F. Kawaguchi, H. Koizumi, “Brain function of an ALS patient in complete locked-in state by using optical topography,” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Kokubunisi Tokyo, Japan, 2000), pp. 95–97.

He, L.

B. Chance, K. Kang, L. He, H. Liu, S. Zhou, “Precision localization of hidden absorbers in body tissues with phased-array optical system,” Rev. Sci. Instrum. 67, 4324–4332 (1996).
[CrossRef]

Hirasawa, H.

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Hock, C.

A. Villringer, J. Planck, C. Hock, L. Schleinkofer, U. Dirnagl, “Near infrared spectroscopy (NIRS): a new tool to study hemodynamic changes during activation of brain function in human adults,” Neurosci. Lett. 154, 101–104 (1993).
[CrossRef] [PubMed]

Holtom, G.

B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfield, G. Holtom, “Phase modulation system for dual wavelength difference spectroscopy of hemoglobin deoxygenation in tissues,” in Time-Resolved Laser Spectroscopy in Biochemistry II, J. R. Lakowicz, ed., Proc. SPIE1204, 481–491 (1990).
[CrossRef]

Horovitz, S. G.

R. P. Kennan, S. G. Horovitz, A. Maki, Y. Yamashita, H. Koizumi, J. C. Gore, “Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG,” Neuroimage 16, 587–592 (2002).
[CrossRef] [PubMed]

Hoshi, Y.

Y. Hoshi, M. Tamura, “Detection of dynamic changes in cerebral oxygenation coupled to neuronal function during mental work in man,” Neurosci. Lett. 150, 5–8 (1993).
[CrossRef] [PubMed]

Ichikawa, N.

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

Igawa, M.

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Itagaki, H.

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

K. Kogure, Y. Yamashita, A. Maki, H. Itagaki, M. Izumiyama, H. Koizumi, “Functional near-infrared spectrography (fNIR) in the neurology ward,” J. Cereb. Blood Flow Metab. 17(S1), S555 (1997).

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

Ito, M.

M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

Ito, Y.

Y. Ito, R. Kennan, E. Watanabe, H. Koizumi, “Assessment of heating effects in skin during continuous wave near infrared spectroscopy,” J. Biomed. Opt. 5, 383–390 (2000).
[CrossRef] [PubMed]

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

E. Watanabe, Y. Yamashita, A. Maki, Y. Ito, H. Koizumi, “Non-invasive functional mapping with multi-channel near infra-red spectroscopic topography in humans,” Neurosci. Lett. 205, 41–44 (1996).
[CrossRef] [PubMed]

A. Maki, Y. Yamashita, Y. Ito, E. Watanabe, Y. Mayanagi, H. Koizumi, “Spatial and temporal analysis of human motor activity using noninvasive NIR topography,” Med. Phys. 22, 1997–2005 (1995).
[CrossRef] [PubMed]

F. Kawaguchi, Y. Yamashita, Y. Ito, A. Maki, H. Takeuchi, “Near infrared optical CT image of rat brain,” Med. Biol. Eng. Comput. 29(S2), 959 (1991).

M. Haida, Y. Shinohara, Y. Ito, T. Yamamoto, F. Kawaguchi, H. Koizumi, “Brain function of an ALS patient in complete locked-in state by using optical topography,” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Kokubunisi Tokyo, Japan, 2000), pp. 95–97.

Itoh, Y.

Y. Shinohara, M. Haida, N. Shinohara, F. Kawaguchi, Y. Itoh, H. Koizumi, “Towards near-infrared imaging of the brain,” in Optical Imaging of Brain Function and Metabolism II, A. Villringer, U. Dirgnal, eds. (Plenum, New York, 1997), pp. 85–89.
[CrossRef]

Itoyama, Y.

H. Kato, M. Izumiyama, H. Koizumi, A. Takahashi, Y. Itoyama, “Near-infrared spectroscopic topography as a tool to monitor motor reorganization after hemiparetic stroke: a comparison with functional MRI,” Stroke 33, 2032–2036 (2002).
[CrossRef] [PubMed]

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

Iwata, M.

T. Yamamoto, Y. Yamashita, H. Yoshizawa, A. Maki, M. Iwata, E. Watanabe, H. Koizumi, “Noninvasive measurement of language function by using optical topography,” in Optical Tomography and Spectroscopy of Tissue III, B. Chance, R. R. Alfano, B. J. Tromberg, eds., Proc. SPIE3597, 230–237 (1999).
[CrossRef]

Iwata, N.

N. Iwata, Y. Ugawa, E. Watanabe, Y. Yamashita, H. Koizumi, I. Kanazawa, “Inter-hemispheric connection between bilateral hand motor areas studied with near-infrared spectroscopic (NIRS) mapping and transcranial magnetic stimulation (TMS),” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Hatoyama, Saitoma, Tokyo, 2000), pp. 113–115.

Izumiyama, M.

H. Kato, M. Izumiyama, H. Koizumi, A. Takahashi, Y. Itoyama, “Near-infrared spectroscopic topography as a tool to monitor motor reorganization after hemiparetic stroke: a comparison with functional MRI,” Stroke 33, 2032–2036 (2002).
[CrossRef] [PubMed]

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

K. Kogure, Y. Yamashita, A. Maki, H. Itagaki, M. Izumiyama, H. Koizumi, “Functional near-infrared spectrography (fNIR) in the neurology ward,” J. Cereb. Blood Flow Metab. 17(S1), S555 (1997).

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

Jobsis, F. F.

F. F. Jobsis, “Non-unvasive infrared monitoring of cerebral and myocardial oxygen sufficiency and circulatory parameters,” Science 198, 1264–1267 (1977).
[CrossRef]

Kadoya, T.

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

Kamei, A.

T. Kato, A. Kamei, S. Takahashi, T. Ozaki, “Human visual cortical function during photic stimulation monitoring by means of near-infrared spectroscopy,” J. Cereb. Blood Flow Metab. 13, 516–520 (1993).
[CrossRef] [PubMed]

Kanazawa, I.

N. Iwata, Y. Ugawa, E. Watanabe, Y. Yamashita, H. Koizumi, I. Kanazawa, “Inter-hemispheric connection between bilateral hand motor areas studied with near-infrared spectroscopic (NIRS) mapping and transcranial magnetic stimulation (TMS),” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Hatoyama, Saitoma, Tokyo, 2000), pp. 113–115.

Kang, K.

B. Chance, K. Kang, L. He, H. Liu, S. Zhou, “Precision localization of hidden absorbers in body tissues with phased-array optical system,” Rev. Sci. Instrum. 67, 4324–4332 (1996).
[CrossRef]

Kato, H.

H. Kato, M. Izumiyama, H. Koizumi, A. Takahashi, Y. Itoyama, “Near-infrared spectroscopic topography as a tool to monitor motor reorganization after hemiparetic stroke: a comparison with functional MRI,” Stroke 33, 2032–2036 (2002).
[CrossRef] [PubMed]

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

Kato, T.

T. Kato, A. Kamei, S. Takahashi, T. Ozaki, “Human visual cortical function during photic stimulation monitoring by means of near-infrared spectroscopy,” J. Cereb. Blood Flow Metab. 13, 516–520 (1993).
[CrossRef] [PubMed]

M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

Kawaguchi, F.

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

E. Watanabe, A. Maki, F. Kawaguchi, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Noninvasive cerebral blood volume measurement during seizures using multichannel near infrared spectroscopic topography,” J. Biomed. Opt. 5, 287–290 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, “Non-invasive cerebral blood volume measurement during seizures using multi-channel near infrared spectroscopic topography,” J. Epilepsy 11, 335–340 (1998).
[CrossRef]

F. Kawaguchi, Y. Yamashita, Y. Ito, A. Maki, H. Takeuchi, “Near infrared optical CT image of rat brain,” Med. Biol. Eng. Comput. 29(S2), 959 (1991).

Y. Shinohara, M. Haida, N. Shinohara, F. Kawaguchi, Y. Itoh, H. Koizumi, “Towards near-infrared imaging of the brain,” in Optical Imaging of Brain Function and Metabolism II, A. Villringer, U. Dirgnal, eds. (Plenum, New York, 1997), pp. 85–89.
[CrossRef]

T. Yamamoto, E. Okada, F. Kawaguchi, A. Maki, Y. Yamada, H. Koizumi, “Optical fiber arrangement of optical topography for spatial resolution improvement,” in Optical Tomography and Spectroscopy of Tissue V, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4955, (2003), to be published.
[CrossRef]

M. Haida, Y. Shinohara, Y. Ito, T. Yamamoto, F. Kawaguchi, H. Koizumi, “Brain function of an ALS patient in complete locked-in state by using optical topography,” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Kokubunisi Tokyo, Japan, 2000), pp. 95–97.

Kawashima, R.

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

Kennan, R.

Y. Ito, R. Kennan, E. Watanabe, H. Koizumi, “Assessment of heating effects in skin during continuous wave near infrared spectroscopy,” J. Biomed. Opt. 5, 383–390 (2000).
[CrossRef] [PubMed]

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

Kennan, R. P.

R. P. Kennan, D. Kim, A. Maki, H. Koizumi, R. T. Constable, “Non-invasive assessment of language lateralization by transcranial near infrared optical topography and functional MRI,” Hum. Brain Mapp. 16, 183–189 (2002).
[CrossRef] [PubMed]

R. P. Kennan, S. G. Horovitz, A. Maki, Y. Yamashita, H. Koizumi, J. C. Gore, “Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG,” Neuroimage 16, 587–592 (2002).
[CrossRef] [PubMed]

Kim, D.

R. P. Kennan, D. Kim, A. Maki, H. Koizumi, R. T. Constable, “Non-invasive assessment of language lateralization by transcranial near infrared optical topography and functional MRI,” Hum. Brain Mapp. 16, 183–189 (2002).
[CrossRef] [PubMed]

Kogure, K.

K. Kogure, Y. Yamashita, A. Maki, H. Itagaki, M. Izumiyama, H. Koizumi, “Functional near-infrared spectrography (fNIR) in the neurology ward,” J. Cereb. Blood Flow Metab. 17(S1), S555 (1997).

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

Kogure, T.

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

Koizumi, H.

H. Kato, M. Izumiyama, H. Koizumi, A. Takahashi, Y. Itoyama, “Near-infrared spectroscopic topography as a tool to monitor motor reorganization after hemiparetic stroke: a comparison with functional MRI,” Stroke 33, 2032–2036 (2002).
[CrossRef] [PubMed]

R. P. Kennan, S. G. Horovitz, A. Maki, Y. Yamashita, H. Koizumi, J. C. Gore, “Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG,” Neuroimage 16, 587–592 (2002).
[CrossRef] [PubMed]

R. P. Kennan, D. Kim, A. Maki, H. Koizumi, R. T. Constable, “Non-invasive assessment of language lateralization by transcranial near infrared optical topography and functional MRI,” Hum. Brain Mapp. 16, 183–189 (2002).
[CrossRef] [PubMed]

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

Y. Yamashita, A. Maki, H. Koizumi, “Wavelength dependence of the precision of noninvasive optical measurement of oxy-, deoxy-, and total-hemoglobin concentration,” Med. Phys. 28, 1108–1114 (2001).
[CrossRef] [PubMed]

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

Y. Ito, R. Kennan, E. Watanabe, H. Koizumi, “Assessment of heating effects in skin during continuous wave near infrared spectroscopy,” J. Biomed. Opt. 5, 383–390 (2000).
[CrossRef] [PubMed]

G. Taga, Y. Konishi, A. Maki, T. Tachibana, M. Fujiwara, H. Koizumi, “Spontaneous oscillation of oxy- and deoxy- hemoglobin changes with a phase difference throughout the occipital cortex of newborn infants observed using non-invasive optical topography,” Neurosci. Lett. 282, 101–104 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Noninvasive cerebral blood volume measurement during seizures using multichannel near infrared spectroscopic topography,” J. Biomed. Opt. 5, 287–290 (2000).
[CrossRef] [PubMed]

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, “Non-invasive cerebral blood volume measurement during seizures using multi-channel near infrared spectroscopic topography,” J. Epilepsy 11, 335–340 (1998).
[CrossRef]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

K. Kogure, Y. Yamashita, A. Maki, H. Itagaki, M. Izumiyama, H. Koizumi, “Functional near-infrared spectrography (fNIR) in the neurology ward,” J. Cereb. Blood Flow Metab. 17(S1), S555 (1997).

E. Watanabe, Y. Yamashita, A. Maki, Y. Ito, H. Koizumi, “Non-invasive functional mapping with multi-channel near infra-red spectroscopic topography in humans,” Neurosci. Lett. 205, 41–44 (1996).
[CrossRef] [PubMed]

Y. Yamashita, A. Maki, H. Koizumi, “Near-infrared topographic measurement system: imaging of absorbers localized in a scattering medium,” Rev. Sci. Instrum. 67, 730–732 (1996).
[CrossRef]

A. Maki, Y. Yamashita, E. Watanabe, H. Koizumi, “Visualizing human motor activity by using non-invasive optical topography,” Front Med. Biol. Eng. 7, 285–297 (1996).
[PubMed]

A. Maki, Y. Yamashita, Y. Ito, E. Watanabe, Y. Mayanagi, H. Koizumi, “Spatial and temporal analysis of human motor activity using noninvasive NIR topography,” Med. Phys. 22, 1997–2005 (1995).
[CrossRef] [PubMed]

Y. Shinohara, M. Haida, N. Shinohara, F. Kawaguchi, Y. Itoh, H. Koizumi, “Towards near-infrared imaging of the brain,” in Optical Imaging of Brain Function and Metabolism II, A. Villringer, U. Dirgnal, eds. (Plenum, New York, 1997), pp. 85–89.
[CrossRef]

T. Yamamoto, E. Okada, F. Kawaguchi, A. Maki, Y. Yamada, H. Koizumi, “Optical fiber arrangement of optical topography for spatial resolution improvement,” in Optical Tomography and Spectroscopy of Tissue V, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4955, (2003), to be published.
[CrossRef]

T. Yamamoto, Y. Yamashita, H. Yoshizawa, A. Maki, M. Iwata, E. Watanabe, H. Koizumi, “Noninvasive measurement of language function by using optical topography,” in Optical Tomography and Spectroscopy of Tissue III, B. Chance, R. R. Alfano, B. J. Tromberg, eds., Proc. SPIE3597, 230–237 (1999).
[CrossRef]

T. Yamamoto, A. Maki, Y. Yamashita, Y. Tanikawa, Y. Yamada, H. Koizumi, “Noninvasive brain-function measurement system: optical topography,” in Optical Tomography and Spectroscopy of Tissue IV, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4250, 339–350 (2001).
[CrossRef]

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

M. Haida, Y. Shinohara, Y. Ito, T. Yamamoto, F. Kawaguchi, H. Koizumi, “Brain function of an ALS patient in complete locked-in state by using optical topography,” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Kokubunisi Tokyo, Japan, 2000), pp. 95–97.

M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

N. Iwata, Y. Ugawa, E. Watanabe, Y. Yamashita, H. Koizumi, I. Kanazawa, “Inter-hemispheric connection between bilateral hand motor areas studied with near-infrared spectroscopic (NIRS) mapping and transcranial magnetic stimulation (TMS),” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Hatoyama, Saitoma, Tokyo, 2000), pp. 113–115.

Konishi, Y.

G. Taga, Y. Konishi, A. Maki, T. Tachibana, M. Fujiwara, H. Koizumi, “Spontaneous oscillation of oxy- and deoxy- hemoglobin changes with a phase difference throughout the occipital cortex of newborn infants observed using non-invasive optical topography,” Neurosci. Lett. 282, 101–104 (2000).
[CrossRef] [PubMed]

Kounios, J.

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

Koyama, K.

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Leigh, J. S.

B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfield, G. Holtom, “Phase modulation system for dual wavelength difference spectroscopy of hemoglobin deoxygenation in tissues,” in Time-Resolved Laser Spectroscopy in Biochemistry II, J. R. Lakowicz, ed., Proc. SPIE1204, 481–491 (1990).
[CrossRef]

Lipton, L.

B. Chance, Z. Zhuang, C. Unah, C. Alter, L. Lipton, “Cognition-activated low-frequency modulation of light absorption in human brain,” Proc. Acad. Sci. USA 90, 3770–3774 (1993).
[CrossRef]

Liu, H.

B. Chance, K. Kang, L. He, H. Liu, S. Zhou, “Precision localization of hidden absorbers in body tissues with phased-array optical system,” Rev. Sci. Instrum. 67, 4324–4332 (1996).
[CrossRef]

Maki, A.

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

R. P. Kennan, S. G. Horovitz, A. Maki, Y. Yamashita, H. Koizumi, J. C. Gore, “Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG,” Neuroimage 16, 587–592 (2002).
[CrossRef] [PubMed]

R. P. Kennan, D. Kim, A. Maki, H. Koizumi, R. T. Constable, “Non-invasive assessment of language lateralization by transcranial near infrared optical topography and functional MRI,” Hum. Brain Mapp. 16, 183–189 (2002).
[CrossRef] [PubMed]

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

Y. Yamashita, A. Maki, H. Koizumi, “Wavelength dependence of the precision of noninvasive optical measurement of oxy-, deoxy-, and total-hemoglobin concentration,” Med. Phys. 28, 1108–1114 (2001).
[CrossRef] [PubMed]

G. Taga, Y. Konishi, A. Maki, T. Tachibana, M. Fujiwara, H. Koizumi, “Spontaneous oscillation of oxy- and deoxy- hemoglobin changes with a phase difference throughout the occipital cortex of newborn infants observed using non-invasive optical topography,” Neurosci. Lett. 282, 101–104 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Noninvasive cerebral blood volume measurement during seizures using multichannel near infrared spectroscopic topography,” J. Biomed. Opt. 5, 287–290 (2000).
[CrossRef] [PubMed]

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, “Non-invasive cerebral blood volume measurement during seizures using multi-channel near infrared spectroscopic topography,” J. Epilepsy 11, 335–340 (1998).
[CrossRef]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

K. Kogure, Y. Yamashita, A. Maki, H. Itagaki, M. Izumiyama, H. Koizumi, “Functional near-infrared spectrography (fNIR) in the neurology ward,” J. Cereb. Blood Flow Metab. 17(S1), S555 (1997).

E. Watanabe, Y. Yamashita, A. Maki, Y. Ito, H. Koizumi, “Non-invasive functional mapping with multi-channel near infra-red spectroscopic topography in humans,” Neurosci. Lett. 205, 41–44 (1996).
[CrossRef] [PubMed]

A. Maki, Y. Yamashita, E. Watanabe, H. Koizumi, “Visualizing human motor activity by using non-invasive optical topography,” Front Med. Biol. Eng. 7, 285–297 (1996).
[PubMed]

Y. Yamashita, A. Maki, H. Koizumi, “Near-infrared topographic measurement system: imaging of absorbers localized in a scattering medium,” Rev. Sci. Instrum. 67, 730–732 (1996).
[CrossRef]

A. Maki, Y. Yamashita, Y. Ito, E. Watanabe, Y. Mayanagi, H. Koizumi, “Spatial and temporal analysis of human motor activity using noninvasive NIR topography,” Med. Phys. 22, 1997–2005 (1995).
[CrossRef] [PubMed]

F. Kawaguchi, Y. Yamashita, Y. Ito, A. Maki, H. Takeuchi, “Near infrared optical CT image of rat brain,” Med. Biol. Eng. Comput. 29(S2), 959 (1991).

T. Yamamoto, E. Okada, F. Kawaguchi, A. Maki, Y. Yamada, H. Koizumi, “Optical fiber arrangement of optical topography for spatial resolution improvement,” in Optical Tomography and Spectroscopy of Tissue V, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4955, (2003), to be published.
[CrossRef]

H. Sato, A. Maki, “Wavelength dependence of sensitivity in near-infrared spectroscopy for measurements of temporal cortex activation,” The Third Inter-Institute Workshop on Diagnostic Optical Imaging and Spectroscopy: The Clinical Adventure (National Institutes of Health, Bethesda, Md., 26September, 2002).

T. Yamamoto, A. Maki, Y. Yamashita, Y. Tanikawa, Y. Yamada, H. Koizumi, “Noninvasive brain-function measurement system: optical topography,” in Optical Tomography and Spectroscopy of Tissue IV, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4250, 339–350 (2001).
[CrossRef]

T. Yamamoto, Y. Yamashita, H. Yoshizawa, A. Maki, M. Iwata, E. Watanabe, H. Koizumi, “Noninvasive measurement of language function by using optical topography,” in Optical Tomography and Spectroscopy of Tissue III, B. Chance, R. R. Alfano, B. J. Tromberg, eds., Proc. SPIE3597, 230–237 (1999).
[CrossRef]

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

Mayanagi, Y.

E. Watanabe, A. Maki, F. Kawaguchi, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Noninvasive cerebral blood volume measurement during seizures using multichannel near infrared spectroscopic topography,” J. Biomed. Opt. 5, 287–290 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

A. Maki, Y. Yamashita, Y. Ito, E. Watanabe, Y. Mayanagi, H. Koizumi, “Spatial and temporal analysis of human motor activity using noninvasive NIR topography,” Med. Phys. 22, 1997–2005 (1995).
[CrossRef] [PubMed]

Mehler, J.

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

Millikan, G. A.

G. A. Millikan, “The oximeter, an instrument for measuring continuously the oxygen saturation of arterial blood in man,” Rev. Sci. Instrum. 13, 434–444 (1942).
[CrossRef]

Miyake, H.

B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfield, G. Holtom, “Phase modulation system for dual wavelength difference spectroscopy of hemoglobin deoxygenation in tissues,” in Time-Resolved Laser Spectroscopy in Biochemistry II, J. R. Lakowicz, ed., Proc. SPIE1204, 481–491 (1990).
[CrossRef]

Nioka, S.

B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfield, G. Holtom, “Phase modulation system for dual wavelength difference spectroscopy of hemoglobin deoxygenation in tissues,” in Time-Resolved Laser Spectroscopy in Biochemistry II, J. R. Lakowicz, ed., Proc. SPIE1204, 481–491 (1990).
[CrossRef]

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

Ogata, S.

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Okada, E.

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

T. Yamamoto, E. Okada, F. Kawaguchi, A. Maki, Y. Yamada, H. Koizumi, “Optical fiber arrangement of optical topography for spatial resolution improvement,” in Optical Tomography and Spectroscopy of Tissue V, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4955, (2003), to be published.
[CrossRef]

Onodera, Y.

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

Ozaki, T.

T. Kato, A. Kamei, S. Takahashi, T. Ozaki, “Human visual cortical function during photic stimulation monitoring by means of near-infrared spectroscopy,” J. Cereb. Blood Flow Metab. 13, 516–520 (1993).
[CrossRef] [PubMed]

Pena, M.

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

Planck, J.

A. Villringer, J. Planck, C. Hock, L. Schleinkofer, U. Dirnagl, “Near infrared spectroscopy (NIRS): a new tool to study hemodynamic changes during activation of brain function in human adults,” Neurosci. Lett. 154, 101–104 (1993).
[CrossRef] [PubMed]

Sadato, N.

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

Saito, N.

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

Sakai, K. L.

H. Sato, T. Takeuchi, K. L. Sakai, “Temporal cortex activation during speech recognition: an optical topography,” Cognition 73, 55–66 (1999).
[CrossRef]

Sassaroli, A.

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

Sato, H.

H. Sato, T. Takeuchi, K. L. Sakai, “Temporal cortex activation during speech recognition: an optical topography,” Cognition 73, 55–66 (1999).
[CrossRef]

H. Sato, A. Maki, “Wavelength dependence of sensitivity in near-infrared spectroscopy for measurements of temporal cortex activation,” The Third Inter-Institute Workshop on Diagnostic Optical Imaging and Spectroscopy: The Clinical Adventure (National Institutes of Health, Bethesda, Md., 26September, 2002).

Schleinkofer, L.

A. Villringer, J. Planck, C. Hock, L. Schleinkofer, U. Dirnagl, “Near infrared spectroscopy (NIRS): a new tool to study hemodynamic changes during activation of brain function in human adults,” Neurosci. Lett. 154, 101–104 (1993).
[CrossRef] [PubMed]

Shiga, Y.

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

Shinohara, N.

Y. Shinohara, M. Haida, N. Shinohara, F. Kawaguchi, Y. Itoh, H. Koizumi, “Towards near-infrared imaging of the brain,” in Optical Imaging of Brain Function and Metabolism II, A. Villringer, U. Dirgnal, eds. (Plenum, New York, 1997), pp. 85–89.
[CrossRef]

Shinohara, Y.

Y. Shinohara, M. Haida, N. Shinohara, F. Kawaguchi, Y. Itoh, H. Koizumi, “Towards near-infrared imaging of the brain,” in Optical Imaging of Brain Function and Metabolism II, A. Villringer, U. Dirgnal, eds. (Plenum, New York, 1997), pp. 85–89.
[CrossRef]

M. Haida, Y. Shinohara, Y. Ito, T. Yamamoto, F. Kawaguchi, H. Koizumi, “Brain function of an ALS patient in complete locked-in state by using optical topography,” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Kokubunisi Tokyo, Japan, 2000), pp. 95–97.

Shiotsuka, S.

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Smith, D. S.

B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfield, G. Holtom, “Phase modulation system for dual wavelength difference spectroscopy of hemoglobin deoxygenation in tissues,” in Time-Resolved Laser Spectroscopy in Biochemistry II, J. R. Lakowicz, ed., Proc. SPIE1204, 481–491 (1990).
[CrossRef]

Tachibana, T.

G. Taga, Y. Konishi, A. Maki, T. Tachibana, M. Fujiwara, H. Koizumi, “Spontaneous oscillation of oxy- and deoxy- hemoglobin changes with a phase difference throughout the occipital cortex of newborn infants observed using non-invasive optical topography,” Neurosci. Lett. 282, 101–104 (2000).
[CrossRef] [PubMed]

Taga, G.

G. Taga, Y. Konishi, A. Maki, T. Tachibana, M. Fujiwara, H. Koizumi, “Spontaneous oscillation of oxy- and deoxy- hemoglobin changes with a phase difference throughout the occipital cortex of newborn infants observed using non-invasive optical topography,” Neurosci. Lett. 282, 101–104 (2000).
[CrossRef] [PubMed]

Takahashi, A.

H. Kato, M. Izumiyama, H. Koizumi, A. Takahashi, Y. Itoyama, “Near-infrared spectroscopic topography as a tool to monitor motor reorganization after hemiparetic stroke: a comparison with functional MRI,” Stroke 33, 2032–2036 (2002).
[CrossRef] [PubMed]

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

Takahashi, K.

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Takahashi, S.

T. Kato, A. Kamei, S. Takahashi, T. Ozaki, “Human visual cortical function during photic stimulation monitoring by means of near-infrared spectroscopy,” J. Cereb. Blood Flow Metab. 13, 516–520 (1993).
[CrossRef] [PubMed]

Takashiro, K.

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, “Non-invasive cerebral blood volume measurement during seizures using multi-channel near infrared spectroscopic topography,” J. Epilepsy 11, 335–340 (1998).
[CrossRef]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

Takeuchi, H.

F. Kawaguchi, Y. Yamashita, Y. Ito, A. Maki, H. Takeuchi, “Near infrared optical CT image of rat brain,” Med. Biol. Eng. Comput. 29(S2), 959 (1991).

Takeuchi, T.

H. Sato, T. Takeuchi, K. L. Sakai, “Temporal cortex activation during speech recognition: an optical topography,” Cognition 73, 55–66 (1999).
[CrossRef]

Tamura, M.

Y. Hoshi, M. Tamura, “Detection of dynamic changes in cerebral oxygenation coupled to neuronal function during mental work in man,” Neurosci. Lett. 150, 5–8 (1993).
[CrossRef] [PubMed]

Tanaka, K.

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

Tanikawa, Y.

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

T. Yamamoto, A. Maki, Y. Yamashita, Y. Tanikawa, Y. Yamada, H. Koizumi, “Noninvasive brain-function measurement system: optical topography,” in Optical Tomography and Spectroscopy of Tissue IV, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4250, 339–350 (2001).
[CrossRef]

Toru, M.

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Turner, R.

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

Ugawa, Y.

N. Iwata, Y. Ugawa, E. Watanabe, Y. Yamashita, H. Koizumi, I. Kanazawa, “Inter-hemispheric connection between bilateral hand motor areas studied with near-infrared spectroscopic (NIRS) mapping and transcranial magnetic stimulation (TMS),” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Hatoyama, Saitoma, Tokyo, 2000), pp. 113–115.

Unah, C.

B. Chance, Z. Zhuang, C. Unah, C. Alter, L. Lipton, “Cognition-activated low-frequency modulation of light absorption in human brain,” Proc. Acad. Sci. USA 90, 3770–3774 (1993).
[CrossRef]

Van Assendelft, O. W.

O. W. Van Assendelft, Spectrophotometry of Hemoglobin Derivatives (Royal Bangorcum Ltd., Assen, The Netherlands, 1970).

Van Zee, P.

D. T. Delpy, M. Cope, P. Van Zee, S. Arridge, S. Wray, J. Wyatt, “Estimation of optical path-length through tissue from direct time of flight measurement,” Phys. Med. Biol. 33, 1433–1442 (1988).
[CrossRef] [PubMed]

Villringer, A.

A. Villringer, J. Planck, C. Hock, L. Schleinkofer, U. Dirnagl, “Near infrared spectroscopy (NIRS): a new tool to study hemodynamic changes during activation of brain function in human adults,” Neurosci. Lett. 154, 101–104 (1993).
[CrossRef] [PubMed]

Watanabe, E.

Y. Ito, R. Kennan, E. Watanabe, H. Koizumi, “Assessment of heating effects in skin during continuous wave near infrared spectroscopy,” J. Biomed. Opt. 5, 383–390 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Noninvasive cerebral blood volume measurement during seizures using multichannel near infrared spectroscopic topography,” J. Biomed. Opt. 5, 287–290 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, “Non-invasive cerebral blood volume measurement during seizures using multi-channel near infrared spectroscopic topography,” J. Epilepsy 11, 335–340 (1998).
[CrossRef]

A. Maki, Y. Yamashita, E. Watanabe, H. Koizumi, “Visualizing human motor activity by using non-invasive optical topography,” Front Med. Biol. Eng. 7, 285–297 (1996).
[PubMed]

E. Watanabe, Y. Yamashita, A. Maki, Y. Ito, H. Koizumi, “Non-invasive functional mapping with multi-channel near infra-red spectroscopic topography in humans,” Neurosci. Lett. 205, 41–44 (1996).
[CrossRef] [PubMed]

A. Maki, Y. Yamashita, Y. Ito, E. Watanabe, Y. Mayanagi, H. Koizumi, “Spatial and temporal analysis of human motor activity using noninvasive NIR topography,” Med. Phys. 22, 1997–2005 (1995).
[CrossRef] [PubMed]

T. Yamamoto, Y. Yamashita, H. Yoshizawa, A. Maki, M. Iwata, E. Watanabe, H. Koizumi, “Noninvasive measurement of language function by using optical topography,” in Optical Tomography and Spectroscopy of Tissue III, B. Chance, R. R. Alfano, B. J. Tromberg, eds., Proc. SPIE3597, 230–237 (1999).
[CrossRef]

N. Iwata, Y. Ugawa, E. Watanabe, Y. Yamashita, H. Koizumi, I. Kanazawa, “Inter-hemispheric connection between bilateral hand motor areas studied with near-infrared spectroscopic (NIRS) mapping and transcranial magnetic stimulation (TMS),” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Hatoyama, Saitoma, Tokyo, 2000), pp. 113–115.

Wray, S.

D. T. Delpy, M. Cope, P. Van Zee, S. Arridge, S. Wray, J. Wyatt, “Estimation of optical path-length through tissue from direct time of flight measurement,” Phys. Med. Biol. 33, 1433–1442 (1988).
[CrossRef] [PubMed]

Wyatt, J.

D. T. Delpy, M. Cope, P. Van Zee, S. Arridge, S. Wray, J. Wyatt, “Estimation of optical path-length through tissue from direct time of flight measurement,” Phys. Med. Biol. 33, 1433–1442 (1988).
[CrossRef] [PubMed]

Yamada, Y.

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

T. Yamamoto, A. Maki, Y. Yamashita, Y. Tanikawa, Y. Yamada, H. Koizumi, “Noninvasive brain-function measurement system: optical topography,” in Optical Tomography and Spectroscopy of Tissue IV, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4250, 339–350 (2001).
[CrossRef]

T. Yamamoto, E. Okada, F. Kawaguchi, A. Maki, Y. Yamada, H. Koizumi, “Optical fiber arrangement of optical topography for spatial resolution improvement,” in Optical Tomography and Spectroscopy of Tissue V, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4955, (2003), to be published.
[CrossRef]

Yamamoto, R.

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

Yamamoto, T.

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

T. Yamamoto, A. Maki, Y. Yamashita, Y. Tanikawa, Y. Yamada, H. Koizumi, “Noninvasive brain-function measurement system: optical topography,” in Optical Tomography and Spectroscopy of Tissue IV, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4250, 339–350 (2001).
[CrossRef]

T. Yamamoto, Y. Yamashita, H. Yoshizawa, A. Maki, M. Iwata, E. Watanabe, H. Koizumi, “Noninvasive measurement of language function by using optical topography,” in Optical Tomography and Spectroscopy of Tissue III, B. Chance, R. R. Alfano, B. J. Tromberg, eds., Proc. SPIE3597, 230–237 (1999).
[CrossRef]

T. Yamamoto, E. Okada, F. Kawaguchi, A. Maki, Y. Yamada, H. Koizumi, “Optical fiber arrangement of optical topography for spatial resolution improvement,” in Optical Tomography and Spectroscopy of Tissue V, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4955, (2003), to be published.
[CrossRef]

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

M. Haida, Y. Shinohara, Y. Ito, T. Yamamoto, F. Kawaguchi, H. Koizumi, “Brain function of an ALS patient in complete locked-in state by using optical topography,” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Kokubunisi Tokyo, Japan, 2000), pp. 95–97.

Yamashita, T.

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

Yamashita, Y.

R. P. Kennan, S. G. Horovitz, A. Maki, Y. Yamashita, H. Koizumi, J. C. Gore, “Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG,” Neuroimage 16, 587–592 (2002).
[CrossRef] [PubMed]

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

Y. Yamashita, A. Maki, H. Koizumi, “Wavelength dependence of the precision of noninvasive optical measurement of oxy-, deoxy-, and total-hemoglobin concentration,” Med. Phys. 28, 1108–1114 (2001).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Noninvasive cerebral blood volume measurement during seizures using multichannel near infrared spectroscopic topography,” J. Biomed. Opt. 5, 287–290 (2000).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, “Non-invasive cerebral blood volume measurement during seizures using multi-channel near infrared spectroscopic topography,” J. Epilepsy 11, 335–340 (1998).
[CrossRef]

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

K. Kogure, Y. Yamashita, A. Maki, H. Itagaki, M. Izumiyama, H. Koizumi, “Functional near-infrared spectrography (fNIR) in the neurology ward,” J. Cereb. Blood Flow Metab. 17(S1), S555 (1997).

E. Watanabe, Y. Yamashita, A. Maki, Y. Ito, H. Koizumi, “Non-invasive functional mapping with multi-channel near infra-red spectroscopic topography in humans,” Neurosci. Lett. 205, 41–44 (1996).
[CrossRef] [PubMed]

A. Maki, Y. Yamashita, E. Watanabe, H. Koizumi, “Visualizing human motor activity by using non-invasive optical topography,” Front Med. Biol. Eng. 7, 285–297 (1996).
[PubMed]

Y. Yamashita, A. Maki, H. Koizumi, “Near-infrared topographic measurement system: imaging of absorbers localized in a scattering medium,” Rev. Sci. Instrum. 67, 730–732 (1996).
[CrossRef]

A. Maki, Y. Yamashita, Y. Ito, E. Watanabe, Y. Mayanagi, H. Koizumi, “Spatial and temporal analysis of human motor activity using noninvasive NIR topography,” Med. Phys. 22, 1997–2005 (1995).
[CrossRef] [PubMed]

F. Kawaguchi, Y. Yamashita, Y. Ito, A. Maki, H. Takeuchi, “Near infrared optical CT image of rat brain,” Med. Biol. Eng. Comput. 29(S2), 959 (1991).

T. Yamamoto, A. Maki, Y. Yamashita, Y. Tanikawa, Y. Yamada, H. Koizumi, “Noninvasive brain-function measurement system: optical topography,” in Optical Tomography and Spectroscopy of Tissue IV, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4250, 339–350 (2001).
[CrossRef]

T. Yamamoto, Y. Yamashita, H. Yoshizawa, A. Maki, M. Iwata, E. Watanabe, H. Koizumi, “Noninvasive measurement of language function by using optical topography,” in Optical Tomography and Spectroscopy of Tissue III, B. Chance, R. R. Alfano, B. J. Tromberg, eds., Proc. SPIE3597, 230–237 (1999).
[CrossRef]

N. Iwata, Y. Ugawa, E. Watanabe, Y. Yamashita, H. Koizumi, I. Kanazawa, “Inter-hemispheric connection between bilateral hand motor areas studied with near-infrared spectroscopic (NIRS) mapping and transcranial magnetic stimulation (TMS),” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Hatoyama, Saitoma, Tokyo, 2000), pp. 113–115.

Yoshizawa, H.

T. Yamamoto, Y. Yamashita, H. Yoshizawa, A. Maki, M. Iwata, E. Watanabe, H. Koizumi, “Noninvasive measurement of language function by using optical topography,” in Optical Tomography and Spectroscopy of Tissue III, B. Chance, R. R. Alfano, B. J. Tromberg, eds., Proc. SPIE3597, 230–237 (1999).
[CrossRef]

Zao, H.

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

Zhou, S.

B. Chance, K. Kang, L. He, H. Liu, S. Zhou, “Precision localization of hidden absorbers in body tissues with phased-array optical system,” Rev. Sci. Instrum. 67, 4324–4332 (1996).
[CrossRef]

Zhuang, Z.

B. Chance, Z. Zhuang, C. Unah, C. Alter, L. Lipton, “Cognition-activated low-frequency modulation of light absorption in human brain,” Proc. Acad. Sci. USA 90, 3770–3774 (1993).
[CrossRef]

Brain Science (1)

A. Maki, M. Pena, G. Dehaene-Lambertz, F. Kawaguchi, M. Fujiwara, N. Ichikawa, H. Koizumi, J. Mehler, “Measurement of infant language function by using optical topography,” Brain Science 22, 1299–1303 (2000), (in Japanese).

Cognition (1)

H. Sato, T. Takeuchi, K. L. Sakai, “Temporal cortex activation during speech recognition: an optical topography,” Cognition 73, 55–66 (1999).
[CrossRef]

Front Med. Biol. Eng. (1)

A. Maki, Y. Yamashita, E. Watanabe, H. Koizumi, “Visualizing human motor activity by using non-invasive optical topography,” Front Med. Biol. Eng. 7, 285–297 (1996).
[PubMed]

Hum. Brain Mapp. (1)

R. P. Kennan, D. Kim, A. Maki, H. Koizumi, R. T. Constable, “Non-invasive assessment of language lateralization by transcranial near infrared optical topography and functional MRI,” Hum. Brain Mapp. 16, 183–189 (2002).
[CrossRef] [PubMed]

J. Biomed. Opt. (4)

H. Koizumi, Y. Yamashita, A. Maki, T. Yamamoto, Y. Ito, H. Itagaki, R. Kennan, “Higher-order brain function analysis by trans-cranial dynamic optical topography,” J. Biomed. Opt. 4, 403–413 (1999); see also issue front cover.
[CrossRef] [PubMed]

Y. Ito, R. Kennan, E. Watanabe, H. Koizumi, “Assessment of heating effects in skin during continuous wave near infrared spectroscopy,” J. Biomed. Opt. 5, 383–390 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Noninvasive cerebral blood volume measurement during seizures using multichannel near infrared spectroscopic topography,” J. Biomed. Opt. 5, 287–290 (2000).
[CrossRef] [PubMed]

K. Takahashi, S. Ogata, Y. Atsumi, R. Yamamoto, S. Shiotsuka, A. Maki, Y. Yamashita, T. Yamamoto, H. Koizumi, H. Hirasawa, M. Igawa, “Activation of the visual cortex imaged by 24-channel near-infrared spectroscopy,” J. Biomed. Opt. 5, 93–96 (2000).
[CrossRef] [PubMed]

J. Cereb. Blood Flow Metab. (2)

K. Kogure, Y. Yamashita, A. Maki, H. Itagaki, M. Izumiyama, H. Koizumi, “Functional near-infrared spectrography (fNIR) in the neurology ward,” J. Cereb. Blood Flow Metab. 17(S1), S555 (1997).

T. Kato, A. Kamei, S. Takahashi, T. Ozaki, “Human visual cortical function during photic stimulation monitoring by means of near-infrared spectroscopy,” J. Cereb. Blood Flow Metab. 13, 516–520 (1993).
[CrossRef] [PubMed]

J. Epilepsy (1)

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, “Non-invasive cerebral blood volume measurement during seizures using multi-channel near infrared spectroscopic topography,” J. Epilepsy 11, 335–340 (1998).
[CrossRef]

Med. Biol. Eng. Comput. (1)

F. Kawaguchi, Y. Yamashita, Y. Ito, A. Maki, H. Takeuchi, “Near infrared optical CT image of rat brain,” Med. Biol. Eng. Comput. 29(S2), 959 (1991).

Med. Phys. (2)

A. Maki, Y. Yamashita, Y. Ito, E. Watanabe, Y. Mayanagi, H. Koizumi, “Spatial and temporal analysis of human motor activity using noninvasive NIR topography,” Med. Phys. 22, 1997–2005 (1995).
[CrossRef] [PubMed]

Y. Yamashita, A. Maki, H. Koizumi, “Wavelength dependence of the precision of noninvasive optical measurement of oxy-, deoxy-, and total-hemoglobin concentration,” Med. Phys. 28, 1108–1114 (2001).
[CrossRef] [PubMed]

Neuroimage (1)

R. P. Kennan, S. G. Horovitz, A. Maki, Y. Yamashita, H. Koizumi, J. C. Gore, “Simultaneous recording of event-related auditory oddball response using transcranial near infrared optical topography and surface EEG,” Neuroimage 16, 587–592 (2002).
[CrossRef] [PubMed]

Neurosci. Lett. (5)

G. Taga, Y. Konishi, A. Maki, T. Tachibana, M. Fujiwara, H. Koizumi, “Spontaneous oscillation of oxy- and deoxy- hemoglobin changes with a phase difference throughout the occipital cortex of newborn infants observed using non-invasive optical topography,” Neurosci. Lett. 282, 101–104 (2000).
[CrossRef] [PubMed]

E. Watanabe, A. Maki, F. Kawaguchi, K. Takashiro, Y. Yamashita, H. Koizumi, Y. Mayanagi, “Non-invasive assessment of language dominance with near-infrared spectroscopic mapping,” Neurosci. Lett. 256, 49–52 (1998).
[CrossRef] [PubMed]

E. Watanabe, Y. Yamashita, A. Maki, Y. Ito, H. Koizumi, “Non-invasive functional mapping with multi-channel near infra-red spectroscopic topography in humans,” Neurosci. Lett. 205, 41–44 (1996).
[CrossRef] [PubMed]

Y. Hoshi, M. Tamura, “Detection of dynamic changes in cerebral oxygenation coupled to neuronal function during mental work in man,” Neurosci. Lett. 150, 5–8 (1993).
[CrossRef] [PubMed]

A. Villringer, J. Planck, C. Hock, L. Schleinkofer, U. Dirnagl, “Near infrared spectroscopy (NIRS): a new tool to study hemodynamic changes during activation of brain function in human adults,” Neurosci. Lett. 154, 101–104 (1993).
[CrossRef] [PubMed]

Phys. Med. Biol. (3)

D. T. Delpy, M. Cope, P. Van Zee, S. Arridge, S. Wray, J. Wyatt, “Estimation of optical path-length through tissue from direct time of flight measurement,” Phys. Med. Biol. 33, 1433–1442 (1988).
[CrossRef] [PubMed]

T. Yamamoto, T. Yamamoto, A. Maki, T. Kadoya, Y. Tanikawa, Y. Yamada, E. Okada, H. Koizumi, “Arranging optical fibers for the spatial resolution improvement of topographical images,” Phys. Med. Biol. 47, 3429–3440 (2002).
[CrossRef] [PubMed]

H. Zao, Y. Tanikawa, G. Gao, Y. Onodera, A. Sassaroli, K. Tanaka, Y. Yamada, “Maps of optical differential pathlength factor of human adult forehead, somatosensory motor and occipital regions at multi-wavelengths in NIR,” Phys. Med. Biol. 47, 2075–2093 (2002).
[CrossRef]

Proc. Acad. Sci. USA (1)

B. Chance, Z. Zhuang, C. Unah, C. Alter, L. Lipton, “Cognition-activated low-frequency modulation of light absorption in human brain,” Proc. Acad. Sci. USA 90, 3770–3774 (1993).
[CrossRef]

Psychiatry Clin. Neurosci. (2)

S. Shiotsuka, Y. Atsumi, S. Ogata, R. Yamamoto, M. Igawa, K. Takahashi, H. Hirasawa, K. Koyama, A. Maki, Y. Yamashita, H. Koizumi, M. Toru, “Cerebral blood volume in the sleep measured by near-infrared spectroscopy,” Psychiatry Clin. Neurosci. 52, 172–173 (1998).
[CrossRef] [PubMed]

M. Igawa, Y. Atsumi, K. Takahashi, S. Shiotsuka, H. Hirasawa, R. Yamamoto, A. Maki, Y. Yamashita, H. Koizumi, “Activation of visual cortex in REM sleep measured by 24-channel NIRS imaging,” Psychiatry Clin. Neurosci. 55, 187–188 (2001).
[CrossRef] [PubMed]

Rev. Sci. Instrum. (3)

B. Chance, K. Kang, L. He, H. Liu, S. Zhou, “Precision localization of hidden absorbers in body tissues with phased-array optical system,” Rev. Sci. Instrum. 67, 4324–4332 (1996).
[CrossRef]

G. A. Millikan, “The oximeter, an instrument for measuring continuously the oxygen saturation of arterial blood in man,” Rev. Sci. Instrum. 13, 434–444 (1942).
[CrossRef]

Y. Yamashita, A. Maki, H. Koizumi, “Near-infrared topographic measurement system: imaging of absorbers localized in a scattering medium,” Rev. Sci. Instrum. 67, 730–732 (1996).
[CrossRef]

Science (1)

F. F. Jobsis, “Non-unvasive infrared monitoring of cerebral and myocardial oxygen sufficiency and circulatory parameters,” Science 198, 1264–1267 (1977).
[CrossRef]

Shinkei (1)

H. Kato, M. Izumiyama, Y. Shiga, N. Saito, H. Koizumi, A. Takahashi, Y. Itoyama, “Hand motor cortical area reorganization following cerebral infarction evaluated with functional MRI, near infrared spectroscopic imaging, and transcranial magnetic stimulation,” Shinkei 53, 869–874 (2001).

Stroke (1)

H. Kato, M. Izumiyama, H. Koizumi, A. Takahashi, Y. Itoyama, “Near-infrared spectroscopic topography as a tool to monitor motor reorganization after hemiparetic stroke: a comparison with functional MRI,” Stroke 33, 2032–2036 (2002).
[CrossRef] [PubMed]

Other (12)

M. Haida, Y. Shinohara, Y. Ito, T. Yamamoto, F. Kawaguchi, H. Koizumi, “Brain function of an ALS patient in complete locked-in state by using optical topography,” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Kokubunisi Tokyo, Japan, 2000), pp. 95–97.

N. Iwata, Y. Ugawa, E. Watanabe, Y. Yamashita, H. Koizumi, I. Kanazawa, “Inter-hemispheric connection between bilateral hand motor areas studied with near-infrared spectroscopic (NIRS) mapping and transcranial magnetic stimulation (TMS),” in The Frontier of Mind-Brain Science and Its Practical Applications II, H. Koizumi, ed. (Hitachi, Ltd., Hatoyama, Saitoma, Tokyo, 2000), pp. 113–115.

H. Koizumi, R. Turner, U. Frith, N. Sadato, B. Chance, S. Nioka, J. Kounios, R. Kawashima, “Developing the brain: an approach towards learning and educational sciences by functional imaging,” in Local Organizer’s Symposium, Eighth International Conference on Functional Mapping of the Human Brain (Sendai, Japan, 2002).

M. Fukuda, H. Koizumi, B. Chance, S. Nioka, A. J. Fallgatter, T. Kato, M. Ito, “Near-infrared spectroscopy in psychiatry,” in Symposium: S-97, Twelfth World Congress of Psychiatry (Yokohama, Japan, 2002).

K. Kogure, M. Izumiyama, T. Kogure, A. Maki, H. Itagaki, T. Yamashita, T. Yamamoto, H. Koizumi, “Functional plasticity of the brain: after ischemic injury assessed by near infrared topography,” in Maturation Phenomenon in Cerebral Ischemia IV, N. G. Bazan, ed. (Springer-Verlag, Berlin, 2001), pp. 103–110.
[CrossRef]

O. W. Van Assendelft, Spectrophotometry of Hemoglobin Derivatives (Royal Bangorcum Ltd., Assen, The Netherlands, 1970).

H. Sato, A. Maki, “Wavelength dependence of sensitivity in near-infrared spectroscopy for measurements of temporal cortex activation,” The Third Inter-Institute Workshop on Diagnostic Optical Imaging and Spectroscopy: The Clinical Adventure (National Institutes of Health, Bethesda, Md., 26September, 2002).

T. Yamamoto, A. Maki, Y. Yamashita, Y. Tanikawa, Y. Yamada, H. Koizumi, “Noninvasive brain-function measurement system: optical topography,” in Optical Tomography and Spectroscopy of Tissue IV, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4250, 339–350 (2001).
[CrossRef]

T. Yamamoto, E. Okada, F. Kawaguchi, A. Maki, Y. Yamada, H. Koizumi, “Optical fiber arrangement of optical topography for spatial resolution improvement,” in Optical Tomography and Spectroscopy of Tissue V, B. Chance, R. R. Alfano, B. J. Tromberg, M. Tamura, E. M. Sevick-Muraca, eds., Proc. SPIE4955, (2003), to be published.
[CrossRef]

B. Chance, J. S. Leigh, H. Miyake, D. S. Smith, S. Nioka, R. Greenfield, G. Holtom, “Phase modulation system for dual wavelength difference spectroscopy of hemoglobin deoxygenation in tissues,” in Time-Resolved Laser Spectroscopy in Biochemistry II, J. R. Lakowicz, ed., Proc. SPIE1204, 481–491 (1990).
[CrossRef]

Y. Shinohara, M. Haida, N. Shinohara, F. Kawaguchi, Y. Itoh, H. Koizumi, “Towards near-infrared imaging of the brain,” in Optical Imaging of Brain Function and Metabolism II, A. Villringer, U. Dirgnal, eds. (Plenum, New York, 1997), pp. 85–89.
[CrossRef]

T. Yamamoto, Y. Yamashita, H. Yoshizawa, A. Maki, M. Iwata, E. Watanabe, H. Koizumi, “Noninvasive measurement of language function by using optical topography,” in Optical Tomography and Spectroscopy of Tissue III, B. Chance, R. R. Alfano, B. J. Tromberg, eds., Proc. SPIE3597, 230–237 (1999).
[CrossRef]

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Figures (10)

Fig. 1
Fig. 1

Concept of optical topography and tomography.

Fig. 2
Fig. 2

Schematic diagram of a 24-channel optical topography system.

Fig. 3
Fig. 3

Temperature distribution in human skin by laser-light irradiation.

Fig. 4
Fig. 4

Optical topographic image overlapped with a magnetic resonance anatomical image: activation of language areas, Broca’s area in left frontal lobe and Welnicke’s area in right temporal lobe during writing.

Fig. 5
Fig. 5

Comparison of imaging methods for higher-order brain functions.

Fig. 6
Fig. 6

Absorption spectrum of oxyhemoglobin deoxyhemoglobin in UV, visible, and near-infrared wavelength regions.

Fig. 7
Fig. 7

Changes in concentration of oxyhemoglobin (dotted curves), deoxyhemoglobin (solid curves), and total hemoglobin (bold curves) for left-hand stimulation in the right hemisphere (contralateral). The wavelength pair used for each measurement is (a) 830/799 nm, (b) 830/752 nm, (c) 830/692 nm.

Fig. 8
Fig. 8

Three types of irradiation and detection configurations.

Fig. 9
Fig. 9

Comparison of phantom images obtained with three configurations.

Fig. 10
Fig. 10

Whole-head optical topography system with 120-change (ETG-7000, Hitachi Medical Co.).

Tables (2)

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Table 1 Features and Limitations of Optical Topography

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Table 2 Developing Application Fields and Themes of Optical Topographya

Equations (9)

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ΔAλ1=oxyλ1ΔCoxy+deoxyλ1ΔCdeoxy,
ΔAλ2=oxyλ2ΔCoxy+deoxyλ2ΔCdeoxy,
ΔCoxy=-deoxyλ2ΔAλ1+deoxyλ1ΔAλ2E,
ΔCdeoxy=oxyλ2ΔAλ1-oxyλ1ΔAλ2E,
ΔCtot=ΔCoxy+ΔCdeoxy=oxyλ2-deoxyλ2ΔAλ1+deoxyλ1-oxyλ1ΔAλ2E,
E=deoxyλ1oxyλ2-deoxyλ2oxyλ1.
δΔCoxy2=-deoxyλ2E2δΔAλ12+deoxyλ1E2δΔAλ22,
δΔCdeoxy2=oxyλ2E2δΔAλ12+-oxyλ1E2δΔAλ22,
δΔCtot2=oxyλ2-deoxyλ2E2δΔAλ12+deoxyλ1-oxyλ1E2δΔAλ22.

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