title: Spatial processing of images and hemisphere function.
abstract: Forty subjects performed both of the following tasks. In the imagery task, simple dot patterns were presented for five seconds in free vision, followed by a three second fixation field. Subsequently, a circle was briefly presented in either the right or the left visual field and subjects were required to indicate whether or not the circle surrounded a point previously occupied by a dot. The perceptual task was similar except that the dot patterns remained on the screen while the circle was presented. Reaction times and error data indicated a left visual field advantage on the imagery task only, suggesting a right hemisphere superiority for extraction of spatial information from images.
authors.affiliation: Department of Psychology, Goldsmiths' College, University of London.
authors.forename: C C
authors.initials: CC
authors.lastname: French
authors.forename: J
authors.initials: J
authors.lastname: Painter
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008606:Mental Processes / Q000502:physiology*; D008875:Middle Aged; D011930:Reaction Time / Q000502:physiology; D013028:Space Perception / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology