G. Gratton et al., SHADES OF GRAY-MATTER - NONINVASIVE OPTICAL-IMAGES OF HUMAN BRAIN RESPONSES DURING VISUAL-STIMULATION, Psychophysiology, 32(5), 1995, pp. 505-509
Recent theories about human brain function emphasize the need for imag
ing methods that allow the study of dynamic interactions among differe
nt structures. In this paper, we report on a new technique, based on t
he measurement of parameters of migration of near-infrared photons, th
at yields functional images of the human occipital cortex, combining a
spatial resolution of 0.5 cm and a temporal resolution of 50 ms. This
technique appears to be suitable for studying the dynamics of cortica
l activation.