Format

Send to

Choose Destination
Behav Neurosci. 2004 Dec;118(6):1176-83.

Handedness in chimpanzees (Pan troglodytes) is associated with asymmetries of the primary motor cortex but not with homologous language areas.

Author information

1
Division of Psychobiology, Yerkes National Primate Research Center, Emory University, Atlanta, GA 30322, USA. lrcbh@rmy.emory.edu

Abstract

The neurobiology of hand preferences in nonhuman primates is poorly understood. In this study, the authors report the first 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.

PMID:
15598127
PMCID:
PMC2043153
DOI:
10.1037/0735-7044.118.6.1176
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for American Psychological Association Icon for PubMed Central
Loading ...
Support Center