Journal
BEHAVIORAL NEUROSCIENCE
Volume 118, Issue 6, Pages 1176-1183Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0735-7044.118.6.1176
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Funding
- NCRR NIH HHS [RR-00165, P51 RR000165] Funding Source: Medline
- NICHD NIH HHS [P01 HD038051-050005, HD-38051, P01 HD038051] Funding Source: Medline
- NINDS NIH HHS [NS-42867, R01 NS042867, NS-36605, R01 NS036605-08, R01 NS036605, R01 NS042867-05] Funding Source: Medline
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The neurobiology of hand preferences in nonhuman primates is poorly understood. In this study, the authors report the 1st evidence of an association between hand preference and precentral gyrus morphology in chimpanzees (Pan troglodytes). Hand preferences did not significantly correlate with other asymmetric brain regions associated with language functions in humans including the planum temporale and frontal operculum. The overall results suggest that homologous regions of the motor cortex control hand preferences in humans and apes and that these functions evolved independently of left-hemisphere specialization for language and speech.
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