Abstract
We recorded maps of cortical and systemic hemodynamic responses (oxy-hemoglobin, O2Hb and deoxy-hemoglobin, HHb) during incremental neuromuscular electrical stimulation (NMES) of the right forearm in nine subjects by a 32-channel time domain fNIRS (TD-fNIRS) instrument. Statistical parametric maps (SPM) relative to the different current stimulations (under and over the maximal tolerated intensity-MTI) versus the 10%MTI were generated. Exploiting the temporal information contained in the TD-fNIRS signal it was possible to create different maps referring to the deeper (cortical activations) and the more superficial (systemic changes) head layers. The increasing of the stimulation current on the right forearm muscle produced a significantly larger bilateral sensorimotor and prefrontal cortical activations (i.e. increase in the O2Hb and decrease in HHb) than the systemic changes. Physiological parameters (heart rate, breathing rate and skin conductance) were also monitored.
© 2013 SPIE
PDF ArticleMore Like This
Lucia Zucchelli, Lorenzo Spinelli, Davide Contini, Rebecca Re, and Alessandro Torricelli
88040B European Conference on Biomedical Optics (ECBO) 2013
H. Wabnitz, T. H. Sander, A. Jelzow, F. Peters, F. Geisler, M. Wachs, S. Leistner, B.-M. Mackert, L. Trahms, and R. Macdonald
BTuB3 Biomedical Optics (BIOMED) 2010
Erika Molteni, Anna M. Bianchi, Giuseppe Baselli, Matteo Caffini, Davide Contini, Lorenzo Spinelli, Alessandro Torricelli, Sergio Cerutti, and Rinaldo Cubeddu
7369_03 European Conference on Biomedical Optics (ECBO) 2009