Species-specific calls activate homologs of Broca's and Wernicke's areas in the macaque

Gil-da-Costa, R., Martin, A., Lopes, M. A., Muñoz, M. , Fritz, J. B. and Braun, A. R. (2006) Species-specific calls activate homologs of Broca's and Wernicke's areas in the macaque. Nature Neuroscience, 9(8), pp. 1064-1070. (doi: 10.1038/nn1741) (PMID:16862150)

Abstract

The origin of brain mechanisms that support human language—whether these originated de novo in humans or evolved from a neural substrate that existed in a common ancestor—remains a controversial issue. Although the answer is not provided by the fossil record, it is possible to make inferences by studying living species of nonhuman primates. Here we identified neural systems associated with perceiving species-specific vocalizations in rhesus macaques using H215O positron emission tomography (PET). These vocalizations evoke distinct patterns of brain activity in homologs of the human perisylvian language areas. Rather than resulting from differences in elementary acoustic properties, this activity seems to reflect higher order auditory processing. Although parallel evolution within independent primate species is feasible, this finding suggests the possibility that the last common ancestor of macaques and humans, which lived 25–30 million years ago, possessed key neural mechanisms that were plausible candidates for exaptation during the evolution of language.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Munoz, Dr Monica
• Authors: Gil-da-Costa, R., Martin, A., Lopes, M. A., Muñoz, M., Fritz, J. B., and Braun, A. R.
• College/School: College of Medical Veterinary and Life Sciences > School of Life Sciences
• Journal Name: Nature Neuroscience
• Publisher: Nature Publishing Group
• ISSN: 1097-6256
• ISSN (Online): 1546-1726
• Published Online: 23 July 2006