Publikation: Input-increase and input-decrease types of cortical reorganization after upper extremity amputation in humans
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1997
Autor:innen
Sterr, Annette
Flor, Herta
Knecht, Stefan
Pantev, Christo
Taub, Edward
Herausgeber:innen
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Experimental brain research. 1997, 117, pp. 161-164. Available under: doi: 10.1007/s002210050210
Zusammenfassung
A plastic remodeling of regions in somatosensory cortex has previously been observed to occur in separate experimental paradigms in response to loss of somatosensory input and to increase in input. In this study, both types of cortical reorganization have been observed to occur concurrently in the same adult human nervous system as a result of a single intervention. Following upper extremity amputation, magnetic source imaging revealed that tactile stimulation of the lip evoked responses not only in the area of the somatosensory cortex corresponding to the face, but also within the cortical region that would normally correspond to the now absent hand. This "invasion" of the cortical amputation zone was accompanied by a significant increase in the size of the representation of the digits of the intact hand, presumably as a result of an increased importance of sensory stimulation consequent to increased dependence on that hand imposed by the loss of the contralateral extremity.
Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
150 Psychologie
Schlagwörter
Somatosensory, Cortex, Plasticity, Amputation, Magnetoencephalography
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ELBERT, Thomas, Annette STERR, Herta FLOR, Brigitte ROCKSTROH, Stefan KNECHT, Christo PANTEV, Christian WIENBRUCH, Edward TAUB, 1997. Input-increase and input-decrease types of cortical reorganization after upper extremity amputation in humans. In: Experimental brain research. 1997, 117, pp. 161-164. Available under: doi: 10.1007/s002210050210BibTex
@article{Elbert1997Input-10947,
year={1997},
doi={10.1007/s002210050210},
title={Input-increase and input-decrease types of cortical reorganization after upper extremity amputation in humans},
volume={117},
journal={Experimental brain research},
pages={161--164},
author={Elbert, Thomas and Sterr, Annette and Flor, Herta and Rockstroh, Brigitte and Knecht, Stefan and Pantev, Christo and Wienbruch, Christian and Taub, Edward}
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<dcterms:abstract xml:lang="eng">A plastic remodeling of regions in somatosensory cortex has previously been observed to occur in separate experimental paradigms in response to loss of somatosensory input and to increase in input. In this study, both types of cortical reorganization have been observed to occur concurrently in the same adult human nervous system as a result of a single intervention. Following upper extremity amputation, magnetic source imaging revealed that tactile stimulation of the lip evoked responses not only in the area of the somatosensory cortex corresponding to the face, but also within the cortical region that would normally correspond to the now absent hand. This "invasion" of the cortical amputation zone was accompanied by a significant increase in the size of the representation of the digits of the intact hand, presumably as a result of an increased importance of sensory stimulation consequent to increased dependence on that hand imposed by the loss of the contralateral extremity.</dcterms:abstract>
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