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A new puzzle for the evolution of speech?

Published online by Cambridge University Press:  01 August 1998

Christian Abry
Affiliation:
Institut de la Communication Parlée, BP 25, F-38040, Grenoble Cedex 9, France abry@icp.inpg.fr
Louis-Jean Boë
Affiliation:
Institut de la Communication Parlée, BP 25, F-38040, Grenoble Cedex 9, France abry@icp.inpg.fr
Rafael Laboissière
Affiliation:
Institut de la Communication Parlée, BP 25, F-38040, Grenoble Cedex 9, France abry@icp.inpg.fr
Jean-Luc Schwartz
Affiliation:
Institut de la Communication Parlée, BP 25, F-38040, Grenoble Cedex 9, France abry@icp.inpg.fr
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Abstract

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We agree with MacNeilage's claim that speech stems from a volitional vocalization pathway between the cingulate and the supplementary motor area (SMA). We add the vocal self-monitoring system as the first recruitment of the Broca-Wernicke circuit. SMA control for “frames” is supported by wrong consonant-vowel recurring utterance aphasia and an imaging study of quasi-reiterant speech. The role of Broca's area is questioned in the emergence of “content,” because a primary motor mapping, embodying peripheral constraints, seems sufficient. Finally, we reject a uniquely peripheral account of speech emergence.

Information

Type
Open Peer Commentary
Copyright
© 1998 Cambridge University Press