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Filling-InFrom Perceptual Completion to Cortical Reorganization$
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Luiz Pessoa and Peter De Weerd

Print publication date: 2003

Print ISBN-13: 9780195140132

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780195140132.001.0001

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Plasticity of the Human Auditory Cortex

Plasticity of the Human Auditory Cortex

Chapter:
(p.231) 12 Plasticity of the Human Auditory Cortex
Source:
Filling-In
Author(s):

Christo Pantev

Nathan Weisz

Michael Schulte

Thomas Elbert

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195140132.003.0012

This chapter discusses the relationship between neuroplastic changes in the auditory cortex and its perceptual manifestations. It shows that deafferentation due to cochlear damage in patients with high-frequency hearing loss goes along with an enlargement of the lesion-edge frequency. Plastic modifications of the tonotopic map following deafferentation may also underlie the expanded representation of the tinnitus frequency found in tinnitus patients. Thus, a mechanism designed to adjust cortical organization to the individual's needs and environment may have maladaptive consequences. In the intact organism, cortical reorganization is an essential basis for training and adaptive responses, like the ability to acquire motor or perceptual skills and to model the environment in the form of context-dependent cortical representational maps.

Keywords:   cortical reorganization, plasticity, cortical auditory system, deafferentation, perception

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