M Pathway and Areas 44 and 45 Are Involved in Stereoscopic Recognition Based on Binocular Disparity

Tsuneo Negawa, Shinji Mizuno, Tomoya Hahashi, Hiromi Kuwata, Mihoko Tomida, Hiroaki Hoshi, Seiichi Era, Kazuo Kuwata
2002 The Japanese Journal of Physiology  
Environmental information is generally sent through several pathways that are parallel to the physically separated areas of the cerebral cortex, communicating with one another to produce the integration. A stereoscopic recognition is a typical example of the integration of two-dimensional (2D) images of a three-dimensional (3D) object projected in slightly different planes into a single-image having a 3D effect. Stereoscopic vision has been studied intensively at both the theoretical and
more » ... tional levels [1-3]. Since stereoscopic recognition is known to exhibit a diverse and moderately complicated phenomena, which are well suited for study at the neurophysiological level, human brain mapping involved in stereoscopic recognition have been of growing interest [4] [5] [6] [7] [8] . Lesion analyses in humans [9] [10] [11] indicate that the parietal cortex plays a major role with a suggestion of right-hemisphere dominance for stereoscopic recognition. For example, patients with anterior temporallobe lesions demonstrate impaired global stereopsis but intact local stereoacuity [9] . Patients with rightsided temporal lobe lesions perform significantly worse than those with left-sided lesions in perceiving depth when it is cued by ambiguous disparities [10] . Right hemisphere superiority has been suggested from works with normal human subjects [11] . Binocularly driven V3 complex cells project to the parieto-occipital area of the superior parietal lobule and lateral and posterior intraparietal areas in the lateral bank and fundus of the intraparietal sulcus in the cat [12] and
doi:10.2170/jjphysiol.52.191 pmid:12139777 fatcat:etzjkuoiijcsrlcx7mlmgkfq5u