Cerebral asymmetry for mental rotation: effects of response hand, handedness and gender

Johnson, Blake W., McKenzie, Kirsten J. and Hamm, Jeff P. (2002) Cerebral asymmetry for mental rotation: effects of response hand, handedness and gender. Neuroreport, 13 (15). pp. 1929-1932. ISSN 0959-4965

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Item Type:Article
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We assessed lateralization of brain function during mental rotation, measuring the scalp distribution of a 400-600 ms latency event-related potential (ERP) with 128 recording electrodes. Twenty-four subjects, consisting of equal numbers of dextral and sinistral males and females, performed a mental rotation task under two response conditions (dominant non-dominant hand). For males, ERPs showed a right parietal bias regardless of response hand. For females, the parietal ERPs were slightly left-lateralized when making dominant hand responses, but strongly right-lateralized when making non-dominant hand responses. These results support the notion that visuo-spatial processing is more bilaterally organized in females. However, left hemisphere resources may be allocated to response preparation when using the non-dominant hand, forcing visuo-spatial processing to the right hemisphere.

Additional Information:Cognitive Neuroscience And Neuropsychology
Keywords:Mental rotation, Handedness, Gender, Cerebral lateralisation
Subjects:C Biological Sciences > C800 Psychology
C Biological Sciences > C850 Cognitive Psychology
Divisions:College of Social Science > School of Psychology
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ID Code:17425
Deposited On:08 May 2015 15:21

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