Moving illusory contours activate primary visual cortex: an fMRI study.
Identifying the cortical areas activated by illusory contours provides valuable information on the mechanisms of object perception. We applied functional magnetic resonance imaging to identify the visual areas of the human brain involved in the perception of a moving Kanizsa-type illusory contour. Our results indicate that, in addition to other cortical regions, areas V5 and V1 are activated. Activity in area V1 was particularly prominent.
Seghier
M
M
INSERM U438, RMN Bioclinique, LRC CEA, Centre Hospitalier Universitaire, Pavillon B, BP 217, F-38043 Grenoble Cedex 9, France.
Dojat
M
M
Delon-Martin
C
C
Rubin
C
C
Warnking
J
J
Segebarth
C
C
Bullier
J
J
D000328:Adult; D001931:Brain Mapping; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009903:Optical Illusions / Q000502:physiology*; D010775:Photic Stimulation; D014793:Visual Cortex / Q000502:physiology*