title: Effects of unilateral hemispheric lesions on two types of optico-geometric illusions.
abstract: Two optico-geometrical illusions--the Müller-Lyer (ML) and the Ponzo (P) illusion--have been studied in normal subjects and in patients with unilateral cortical lesions. Patients with left-sided lesions have stronger illusions than normal subjects, the increase being significant only for the ML illusion. In the case of right-sided lesions, the P illusion is weakened while the ML illusion is equivalent to that of control subjects. The findings are discussed in relation to the mode of apprehension of information.
mesh_terms: D000328:Adult; D001927:Brain Diseases / Q000503:physiopathology*; D004292:Dominance, Cerebral; D005260:Female; D006801:Humans; D007088:Illusions; D008297:Male; D008875:Middle Aged; D009903:Optical Illusions