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| Research article summary (published 26 Oct 2002): |
Cerebral asymmetry for mental rotation: effects of response hand, handedness and gender.
Full Abstract
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.
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Author information
Author/s: Johnson, Blake W (BW); McKenzie, Kirsten J (KJ); Hamm, Jeff P (JP);
Affiliation: Department of Psychology, University of Auckland, New Zealand. b.johnson(-atsign-)auckland.ac.nz
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: Neuroreport (Neuroreport), published in England. (Language: eng)
Reference: 2002-Oct; vol 13 (issue 15) : pp 1929-32
Dates: Created 2002/10/23; Completed 2003/02/07; Revised 2006/11/15;
PMID: 12395094, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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