title: Mirror reversal by blind subjects in cutaneous perception and motor production of letters and numbers.
abstract: A letter drawn on the forehead is often perceived as its mirror reversal. Similarly, people produce mirror reversals when asked to write a letter on the underside of a table at which they are sitting. We varied the orientation and position of the stimulated or inscribed surface, and found several examples of these two mirror-reversal phenomena in blind subjects (who had no, or very little, visual experience), as well as in sighted subjects. Furthermore, the mirror-reversal rate of the two groups of subjects as a function of orientation and position of the surface was highly correlated. Thus, the mirror-reversal phenomena should be attributed to a nonvisual, spatial cognitive scheme that is perhaps shared by sighted and blind subjects.
authors.forename: S
authors.initials: S
authors.lastname: Shimojo
authors.forename: M
authors.initials: M
authors.lastname: Sasaki
authors.forename: L M
authors.initials: LM
authors.lastname: Parsons
authors.forename: S
authors.initials: S
authors.lastname: Torii
mesh_terms: D000328:Adult; D001288:Attention; D001766:Blindness / Q000523:psychology*; D004292:Dominance, Cerebral; D006801:Humans; D008297:Male; D009949:Orientation; D014110:Touch