Neural reuse in the evolution and development of the brain: Evidence for developmental homology?
Document Type
Article
Publication Date
1-2013
Journal
Developmental Psychobiology
Volume
55
Issue
1
First Page
42
Last Page
51
URL with Digital Object Identifier
10.1002/dev.21055
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.
Notes
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