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Dev Psychobiol. 2013 Jan;55(1):42-51. doi: 10.1002/dev.21055. Epub 2012 Jun 18.

Neural reuse in the evolution and development of the brain: evidence for developmental homology?

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  • 1Department of Psychology, Franklin & Marshall College, P.O. Box 3003, Lancaster, PA 17604-3003, USA. michael.anderson@fandm.edu

Abstract

This article lays out some of the empirical evidence for the importance of neural reuse-the reuse of existing (inherited and/or early developing) neural circuitry for multiple behavioral purposes-in defining the overall functional structure of the brain. We then discuss in some detail one particular instance of such reuse: the involvement of a local neural circuit in finger awareness, number representation, and other diverse functions. Finally, we consider whether and how the notion of a developmental homology can help us understand the relationships between the cognitive functions that develop out of shared neural supports.

PMID:
22711453
DOI:
10.1002/dev.21055
[PubMed - indexed for MEDLINE]
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