Document Detail

Manual laterality in Campbell's Monkeys (Cercopithecus c. campbelli) in spontaneous and experimental actions.
MedLine Citation:
PMID:  16919818     Owner:  NLM     Status:  MEDLINE    
Behavioural asymmetries, once thought to be exclusively human, appear to be widespread in vertebrates. A population-level bias should stem from natural selection and reflect a cerebral dominance, while individual preferences might be linked to individual characteristics. Manual laterality has been extensively investigated in non-human primates. However, despite a strong data base, no general patterns have emerged, resulting in a few explanatory theories and little consensus. This study was interested in manual laterality in 12 Campbell's monkeys (Cercopithecus c. campbelli). Several theories were examined, using both direct behavioural observations during feeding behaviour and six controlled experimental conditions, in which we varied task demands to investigate the effect of two factors. We systematically varied the individual posture (sat, tripedal, bipedal, clung) and the complexity of the task (box with or without a lid to open). Concerning the direction of preference, we found individual and action-specific preferences for experimental actions, which match previous reports. No population bias emerged and each subject appeared to react differently to the factors, hereby contradicting the theories. However, concerning the strength of preference, all individuals tended to be affected in similar ways. Spontaneous actions were less lateralized than experimental ones, and the simplest task and spontaneous category tended to show the weakest laterality. The relative complexity and novelty of these actions may account for these results.
Amandine Chapelain; Philippe Bec; Catherine Blois-Heulin
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2006-08-17
Journal Detail:
Title:  Behavioural brain research     Volume:  173     ISSN:  0166-4328     ISO Abbreviation:  Behav. Brain Res.     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-09-01     Completed Date:  2006-11-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8004872     Medline TA:  Behav Brain Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  237-45     Citation Subset:  IM    
Department of Human Sciences, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK.
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MeSH Terms
Behavior, Animal / physiology*
Cercopithecus / physiology*
Choice Behavior
Feeding Behavior / physiology
Functional Laterality / physiology*
Psychomotor Performance / physiology*

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