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Shades of gray matter: Noninvasive optical images of human brain reponses during visual stimulation
Author(s) -
GRATTON GABRIELE,
CORBALLIS PAUL M.,
CHO EUNHEE,
FABIANI MONICA,
HOOD DONALD C.
Publication year - 1995
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1995.tb02102.x
Subject(s) - psychology , gray (unit) , neuroscience , stimulation , human brain , brain stimulation , cognitive psychology , cognitive science , nuclear medicine , medicine
Recent theories about human brain function emphasize the need for imaging methods that allow the study of dynamic interactions among different structures. In this paper, we report on a new technique, based on the measurement of parameters of migration of near‐infrared photons, that 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 cortical activation.