Cerebral lateralization of global-local processing in left- and right-handed people.
Cerebral lateralization of global-local processing of 70 left-handed and 70 right-handed students was compared using a computerized global-local task in a half-visual field paradigm. Analysis showed that left-handed individuals were slower than right-handed individuals in processing Globally Directed stimuli presented to the left visual field (right hemisphere). In addition, left-handed individuals showed smaller local superiority in the left hemisphere to the right-handed individuals. These findings are more consistent with Levy's prediction of spatial inferiority of left-handed individuals than Geschwind and Galaburda's or Annett's hypotheses.
Goodarzi
Mohammad Ali
MA
Department of Psychology, College of Education and Psychology, Shiraz University, Iran. goodarzi@shirazu.ac.ir
Taghavi
Mohammad Reza
MR
Zoughi
Mohammad Reza
MR
D001921:Brain / Q000502:physiology*; D002648:Child; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D008959:Models, Neurological; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D010364:Pattern Recognition, Visual / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D013028:Space Perception / Q000502:physiology*; D014705:Verbal Behavior / Q000502:physiology; D014794:Visual Fields / Q000502:physiology*