Abstract

The time course of the decay of the positive afterimage followving high-intensity flashes was measured by monocular and binocular brightness matching. The comparison field luminance was adjusted by means of crossed neutral wedges driven by a reversible motor. Density of the wedges was continuously recorded and the afterimage was tracked up to seven minutes following the flashes. Flash durations of 0.24 to 1.4 msec were used with a flash luminance of 4×10<sup>5</sup> L. With a 10° monocular bipartite photometric field, the afterimage brightness 5 sec following a 3×10<sup>7</sup> td-sec flash was matched by a 10<sup>5</sup>-td comparison field. Photometric matches made monocularly or binocularly with an annular afterimage, 10° o.d. and 5° i.d., concentric with a 2° centrally fixated comparison field required approximately 10<sup>4</sup> td. A 2° central afterimage matched with an annular comparison field showed no significant difference from the annular afterimage. The results for the first two minutes following the flashes for all conditions showed a linear relationship between the logarithm of the comparison field luminance and the logarithm of the time measured from the flash.

PDF Article

References

  • View by:
  • |
  • |

  1. D. B. Judd, Am. J. Psychol. 38, 507 (1927).
  2. K. J. W. Craik and M. D. Vernon, Brit. J. Psychiat. 32, 62 (1941–42).
  3. C. A. Padgham, Brit. J. Ophthalmol. 37, 165 (1953).
  4. M. Alpern and L. Barr, J. Opt. Soc. Am. 52, 219 (1962).
  5. G. S. Brindley, J. Physiol. 147, 194 (1959).
  6. H. B. Barlow and J. M. B. Sparrock, Science 144, 1309 (1964).
  7. V. M. Robertson and G. A. Fry, Am. J. Psychol. 49, 265 1937).
  8. C. A. Padghamn, Opt. Acta 4, 102 (1957).
  9. N. D. Miller, J. Opt. Soc. Am. 55, 1661 (1965).

Alpern, M.

M. Alpern and L. Barr, J. Opt. Soc. Am. 52, 219 (1962).

Barlow, H. B.

H. B. Barlow and J. M. B. Sparrock, Science 144, 1309 (1964).

Barr, L.

M. Alpern and L. Barr, J. Opt. Soc. Am. 52, 219 (1962).

Brindley, G. S.

G. S. Brindley, J. Physiol. 147, 194 (1959).

Craik, K. J. W.

K. J. W. Craik and M. D. Vernon, Brit. J. Psychiat. 32, 62 (1941–42).

Fry, G. A.

V. M. Robertson and G. A. Fry, Am. J. Psychol. 49, 265 1937).

Judd, D. B.

D. B. Judd, Am. J. Psychol. 38, 507 (1927).

Miller, N. D.

N. D. Miller, J. Opt. Soc. Am. 55, 1661 (1965).

Padgham, C. A.

C. A. Padgham, Brit. J. Ophthalmol. 37, 165 (1953).

Padghamn, C. A.

C. A. Padghamn, Opt. Acta 4, 102 (1957).

Robertson, V. M.

V. M. Robertson and G. A. Fry, Am. J. Psychol. 49, 265 1937).

Sparrock, J. M. B.

H. B. Barlow and J. M. B. Sparrock, Science 144, 1309 (1964).

Vernon, M. D.

K. J. W. Craik and M. D. Vernon, Brit. J. Psychiat. 32, 62 (1941–42).

Other

D. B. Judd, Am. J. Psychol. 38, 507 (1927).

K. J. W. Craik and M. D. Vernon, Brit. J. Psychiat. 32, 62 (1941–42).

C. A. Padgham, Brit. J. Ophthalmol. 37, 165 (1953).

M. Alpern and L. Barr, J. Opt. Soc. Am. 52, 219 (1962).

G. S. Brindley, J. Physiol. 147, 194 (1959).

H. B. Barlow and J. M. B. Sparrock, Science 144, 1309 (1964).

V. M. Robertson and G. A. Fry, Am. J. Psychol. 49, 265 1937).

C. A. Padghamn, Opt. Acta 4, 102 (1957).

N. D. Miller, J. Opt. Soc. Am. 55, 1661 (1965).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.