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Gesture, Speech, and Sign$
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Lynn Messing and Ruth Campbell

Print publication date: 1999

Print ISBN-13: 9780198524519

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780198524519.001.0001

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Neuropsychology of communicative movements

Neuropsychology of communicative movements

Chapter:
(p.3) Chapter 1 Neuropsychology of communicative movements
Source:
Gesture, Speech, and Sign
Author(s):

Pierre Feyereisen

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198524519.003.0001

The first part of this chapter focuses on the control of action. Apparently simple movements, such as pointing to, holding, or showing how to manipulate an object, involve complex transformations of visual information into instructions for arm and hand muscles. Together with other neurophysiological data, the study of brain damaged patients shows that these movements can be disturbed in various ways. The second part of this chapter is devoted to the analysis of limb apraxia, a particular impairment in the control of action. This deficit mainly affects pantomime and imitation tasks, but actual use of objects may also be disturbed. Finally, in the third part, the chapter discusses the relationships that may exist between these disorders of the action system and the disorders of language processing in cases of aphasia.

Keywords:   communicative movements, visual information, limb apraxia, impairment, imitation task, language processing

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