We have non-invasively studied the motor cortex hemodynamics in human subjects under rest and motor stimulation conditions using a multichannel near-IR tissue spectrometer. We obtained optical maps of oxy- and deoxy-hemoglobin concentration changes in terms of amplitudes of folding average, power spectrum and coherence at the stimulation repetition frequency, and the phase synchronization index. Under periodic motor stimulation conditions, we observed coherence and phase synchronization of the local hemodynamic changes with stimulation.

Date Published: 6 April 2000
PDF: 4 pages
Proc. SPIE 4001, Saratov Fall Meeting '99: Optical Technologies in Biophysics and Medicine, (6 April 2000); doi: 10.1117/12.381494

Published in SPIE Proceedings Vol. 4001:
Saratov Fall Meeting '99: Optical Technologies in Biophysics and Medicine
Valery V. Tuchin; Dmitry A. Zimnyakov; Alexander B. Pravdin, Editor(s)