Focal hemisphere and visuoperceptual categorization.
Visuoperceptual categorization was investigated in patients with unilateral brain damage by a task in which meaningless shapes had to be classified with reference to a number of prototype patterns. Right brain-damaged subjects with visual field defect turned out to have a narrower categorization span. As this outcome seems to be scarcely consonant with a lower level disorder of visual processing, a major competence of the right hemisphere is suggested for visuoperceptual categorization.
D001931:Brain Mapping; D002561:Cerebrovascular Disorders / Q000150:complications; D004292:Dominance, Cerebral; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D010468:Perceptual Disorders / Q000175:diagnosis / Q000209:etiology*