Document Detail

Examining the relationship between degree of handedness and degree of cerebral lateralization for processing facial emotion.
MedLine Citation:
PMID:  18444713     Owner:  NLM     Status:  MEDLINE    
This paper examines the relationship between degree of handedness and degree of cerebral lateralization on a task of processing positive facial emotion in right-handed individuals. Three hundred and thirteen right-handed participants (157 women) were given two behavioral tests of lateralization: a handedness questionnaire and a chimeric faces test. Two further handedness measures were taken: familial left-handedness and writing posture. Regression analysis showed that both degree of handedness and sex were predictive of degree of lateralization. Individuals who were strongly right-handed were also more strongly lateralized to the right hemisphere for the task. Men were more strongly lateralized than women. Data were reanalyzed for men and women separately. The relationship between handedness and lateralization remained for men only. Neither familial left-handedness nor writing posture were associated with cerebral lateralization for men or women. The results suggest a positive relationship between degree of handedness and degree of cerebral lateralization, and further that there is a sex difference in this relationship.
Victoria J Bourne
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Neuropsychology     Volume:  22     ISSN:  0894-4105     ISO Abbreviation:  Neuropsychology     Publication Date:  2008 May 
Date Detail:
Created Date:  2008-04-30     Completed Date:  2008-07-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8904467     Medline TA:  Neuropsychology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  350-6     Citation Subset:  IM    
School of Psychology, University of Dundee, Scotland, UK.
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MeSH Terms
Dominance, Cerebral / physiology*
Emotions / physiology*
Facial Expression*
Functional Laterality / physiology*
Middle Aged
Pattern Recognition, Visual / physiology
Photic Stimulation
Regression Analysis

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