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CROSS-MODAL PLASTICITY OF TACTILE PERCEPTION IN BLINDNESS

Identifieur interne : 001203 ( Pmc/Curation ); précédent : 001202; suivant : 001204

CROSS-MODAL PLASTICITY OF TACTILE PERCEPTION IN BLINDNESS

Auteurs : K. Sathian ; Randall Stilla

Source :

Restorative neurology and neuroscience [ 0922-6028 ] ; 2010.

RBID : PMC:3159519

Abstract

This review focusses on cross-modal plasticity resulting from visual deprivation. This is viewed against the background of task-specific visual cortical recruitment that is routine during tactile tasks in the sighted and that may depend in part on visual imagery. Superior tactile perceptual performance in the blind may be practice-related, although there are unresolved questions regarding the effects of Braille-reading experience and the age of onset of blindness. While visual cortical areas are clearly more involved in tactile microspatial processing in the blind than in the sighted, it still remains unclear how to reconcile these tactile processes with the growing literature implicating visual cortical activity in a wide range of cognitive tasks in the blind, including those involving language, or with studies of short-term, reversible visual deprivation in the normally sighted that reveal plastic changes even over periods of hours or days.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3159519

DOI: 10.3233/RNN-2010-0534
PubMed: 20404414
PubMed Central: 3159519

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K. Sathian

<affiliation><nlm:aff id="A1">Department of Neurology, Emory University, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

<affiliation><nlm:aff id="A2">Department of Rehabilitation Medicine, Emory University, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

<affiliation><nlm:aff id="A3">Department of Psychology, Emory University, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

<affiliation><nlm:aff id="A4">Rehabilitation R&D Center of Excellence, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

K. Sathian

<affiliation><nlm:aff id="A2">Department of Rehabilitation Medicine, Emory University, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

<affiliation><nlm:aff id="A3">Department of Psychology, Emory University, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

<affiliation><nlm:aff id="A4">Rehabilitation R&D Center of Excellence, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

K. Sathian

<affiliation><nlm:aff id="A3">Department of Psychology, Emory University, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

<affiliation><nlm:aff id="A4">Rehabilitation R&D Center of Excellence, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

K. Sathian

<affiliation><nlm:aff id="A4">Rehabilitation R&D Center of Excellence, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

Randall Stilla

<affiliation><nlm:aff id="A1">Department of Neurology, Emory University, Atlanta VAMC</nlm:aff>
<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
</affiliation>

Le document en format XML

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<wicri:noCountry code="subfield">Atlanta VAMC</wicri:noCountry>
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<front><div type="abstract" xml:lang="en"><p id="P1">This review focusses on cross-modal plasticity resulting from visual deprivation. This is viewed against the background of task-specific visual cortical recruitment that is routine during tactile tasks in the sighted and that may depend in part on visual imagery. Superior tactile perceptual performance in the blind may be practice-related, although there are unresolved questions regarding the effects of Braille-reading experience and the age of onset of blindness. While visual cortical areas are clearly more involved in tactile microspatial processing in the blind than in the sighted, it still remains unclear how to reconcile these tactile processes with the growing literature implicating visual cortical activity in a wide range of cognitive tasks in the blind, including those involving language, or with studies of short-term, reversible visual deprivation in the normally sighted that reveal plastic changes even over periods of hours or days.</p>
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<contrib-group><contrib contrib-type="author"><name><surname>Sathian</surname>
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<xref rid="A1" ref-type="aff">1</xref>
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<aff id="A1"><label>1</label>
Department of Neurology, Emory University, Atlanta VAMC</aff>
<aff id="A2"><label>2</label>
Department of Rehabilitation Medicine, Emory University, Atlanta VAMC</aff>
<aff id="A3"><label>3</label>
Department of Psychology, Emory University, Atlanta VAMC</aff>
<aff id="A4"><label>4</label>
Rehabilitation R&D Center of Excellence, Atlanta VAMC</aff>
<author-notes><corresp id="FN1">Correspondence: K. Sathian, Department of Neurology, Emory University School of Medicine, WMB 6000, 101 Woodruff Circle, Atlanta, GA, USA, Tel: 404-727-1366, Fax: 404-727-3157, <email>krish.sathian@emory.edu</email>
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<pub-date pub-type="nihms-submitted"><day>9</day>
<month>8</month>
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<pub-date pub-type="pmc-release"><day>22</day>
<month>8</month>
<year>2011</year>
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<volume>28</volume>
<issue>2</issue>
<fpage>271</fpage>
<lpage>281</lpage>
<abstract><p id="P1">This review focusses on cross-modal plasticity resulting from visual deprivation. This is viewed against the background of task-specific visual cortical recruitment that is routine during tactile tasks in the sighted and that may depend in part on visual imagery. Superior tactile perceptual performance in the blind may be practice-related, although there are unresolved questions regarding the effects of Braille-reading experience and the age of onset of blindness. While visual cortical areas are clearly more involved in tactile microspatial processing in the blind than in the sighted, it still remains unclear how to reconcile these tactile processes with the growing literature implicating visual cortical activity in a wide range of cognitive tasks in the blind, including those involving language, or with studies of short-term, reversible visual deprivation in the normally sighted that reveal plastic changes even over periods of hours or days.</p>
</abstract>
<funding-group><award-group><funding-source country="United States">National Eye Institute  : NEI</funding-source>
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<award-group><funding-source country="United States">National Eye Institute  : NEI</funding-source>
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CROSS-MODAL PLASTICITY OF TACTILE PERCEPTION IN BLINDNESS

CROSS-MODAL PLASTICITY OF TACTILE PERCEPTION IN BLINDNESS

Source :

Abstract

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