2005•Perceptual and Motor SkillsRequires access

Cerebral Lateralization of Global-Local Processing in Left- and Right-Handed People

Mohammad Ali Goodarzi, Mohammad Reza Taghavi, Mohammad Reza Zoughi

Abstract

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.

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Available abstract

Key concepts: Lateralization of brain function, Left handed, Right hemisphere, Right handed, Left and right, Psychology, Visual field, Cognitive psychology