Information processing of geometrical features of a surface based on binocular disparity cues: an fMRI study.
Cortical areas related to the information processing of binocular disparity-defined geometrical features of a surface, such as depth, orientation and shape are examined by functional magnetic resonance imaging while subjects discriminated these three types of geometrical feature in random dot stereograms. Results indicate that disparity-defined information of depth and that of orientation are processed in the parietal area. Furthermore, the visual system for 3D vision in the parietal area may be organized in a hierarchical manner and the posterior part of the right intraparietal sulcus may be involved in cognitive process of 3D vision. On the other hand, disparity-defined shape information seems to be processed in the occipital visual areas and the crucial involvement of human LOS for this process is suggested.
Naganuma
Tomoka
T
Division of Applied System Neuroscience, Advanced Medical Research Center, Nihon University Graduate School of Medical Science, 30-1 Ohyaguchi-kamimachi Itabashi, Tokyo 173-8610, Japan.
Nose
Izuru
I
Inoue
Kentaro
K
Takemoto
Atsushi
A
Katsuyama
Narumi
N
Taira
Masato
M
D000328:Adult; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000033:anatomy & histology / Q000098:blood supply / Q000502:physiology*; D003463:Cues; D004192:Discrimination, Psychological / Q000502:physiology; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008606:Mental Processes / Q000502:physiology*; D009949:Orientation / Q000502:physiology; D010100:Oxygen / Q000097:blood; D015357:Vision Disparity / Q000502:physiology*; D014785:Vision, Ocular / Q000502:physiology*
D010100:Oxygen