| The sound of one-hand clapping: handedness and perisylvian neural correlates of a communicative gesture in chimpanzees. | |
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MedLine Citation:
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PMID: 22217719 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Whether lateralization of communicative signalling in non-human primates might constitute prerequisites of hemispheric specialization for language is unclear. In the present study, we examined (i) hand preference for a communicative gesture (clapping in 94 captive chimpanzees from two research facilities) and (ii) the in vivo magnetic resonance imaging brain scans of 40 of these individuals. The preferred hand for clapping was defined as the one in the upper position when the two hands came together. Using computer manual tracing of regions of interest, we measured the neuroanatomical asymmetries for the homologues of key language areas, including the inferior frontal gyrus (IFG) and planum temporale (PT). When considering the entire sample, there was a predominance of right-handedness for clapping and the distribution of right- and left-handed individuals did not differ between the two facilities. The direction of hand preference (right- versus left-handed subjects) for clapping explained a significant portion of variability in asymmetries of the PT and IFG. The results are consistent with the view that gestural communication in the common ancestor may have been a precursor of language and its cerebral substrates in modern humans. |
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Authors:
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Adrien Meguerditchian; Molly J Gardner; Steven J Schapiro; William D Hopkins |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-4 |
Journal Detail:
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Title: Proceedings. Biological sciences / The Royal Society Volume: - ISSN: 1471-2954 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-5 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101245157 Medline TA: Proc Biol Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Psychology, Research Center in Psychology of Cognition, Language and Emotion, Aix-Marseille University, , Aix-en-Provence 13621, France, Division of Developmental and Cognitive Neuroscience, Yerkes National Primate Research Center, , Atlanta, GA 30322, USA, Department of Veterinary Sciences, The University of Texas MD Anderson Cancer Center, , Bastrop, TX 78602, USA, Department of Psychology, Agnes Scott College, , Decatur, GA 30030, USA. |
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