title: Shades of gray matter: noninvasive optical images of human brain responses during visual stimulation.
abstract: 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.
authors.affiliation: Department of Psychology, Columbia University, New York, NY 10027, USA.
authors.forename: G
authors.initials: G
authors.lastname: Gratton
authors.forename: P M
authors.initials: PM
authors.lastname: Corballis
authors.forename: E
authors.initials: E
authors.lastname: Cho
authors.forename: M
authors.initials: M
authors.lastname: Fabiani
authors.forename: D C
authors.initials: DC
authors.lastname: Hood
mesh_terms: D000328:Adult; D001921:Brain / Q000033:anatomy & histology / Q000502:physiology*; D001931:Brain Mapping; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D009778:Occipital Lobe / Q000033:anatomy & histology / Q000502:physiology; D010775:Photic Stimulation; D014793:Visual Cortex / Q000033:anatomy & histology / Q000502:physiology