HapticV1, PascalFrancis, Corpus, bibRecord, 000353

Functionally specific oscillatory activity correlates between visual and auditory cortex in the blind

Identifieur interne : 000353 ( PascalFrancis/Corpus ); précédent : 000352; suivant : 000354

Functionally specific oscillatory activity correlates between visual and auditory cortex in the blind

Auteurs : Inga M. Schepers ; Joerg F. Hipp ; Till R. Schneider ; Brigitte Röder ; Andreas K. Engel

Source :

Brain [ 0006-8950 ] ; 2012.

RBID : Pascal:12-0129775

Descripteurs français

Pascal (Inist)
- Cécité, Pathologie du système nerveux, Cortex visuel, Cortex auditif, Congénital, Plasticité, Oscillation, Magnétoencéphalographie.

English descriptors

KwdEn :
- Auditory cortex, Blindness, Congenital, Magnetoencephalography, Nervous system diseases, Oscillation, Plasticity, Visual cortex.

Abstract

Many studies have shown that the visual cortex of blind humans is activated in non-visual tasks. However, the electrophysiological signals underlying this cross-modal plasticity are largely unknown. Here, we characterize the neuronal population activity in the visual and auditory cortex of congenitally blind humans and sighted controls in a complex cognitive task. We recorded magnetoencephalographic responses from participants performing semantic categorization of meaningful sounds that followed the presentation of a semantically related or unrelated haptic object. Source analysis of the spectrally resolved magnetoencephalography data revealed that: (i) neuronal responses to sounds were stronger and longer lasting in the auditory cortex of blind subjects; (ii) auditory stimulation elicited strong oscillatory responses in the visual cortex of blind subjects that closely resembled responses to visual stimulation in sighted humans; (iii) the signal in the gamma frequency range was modulated by semantic congruency between the sounds and the preceding haptic objects; and (iv) signal power in the gamma range was correlated on a trial-by-trial basis between auditory and visual cortex in blind subjects, and the strength of this correlation was modulated by semantic congruency. Our results suggest that specifically oscillatory activity in the gamma range reflects non-visual processing in the visual cortex of blind individuals. Moreover, our results provide evidence that the deprived visual cortex is functionally integrated into a larger network that serves non-visual functions.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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Format Inist (serveur)

NO :	PASCAL 12-0129775 INIST
ET :	Functionally specific oscillatory activity correlates between visual and auditory cortex in the blind
AU :	SCHEPERS (Inga M.); HIPP (Joerg F.); SCHNEIDER (Till R.); RÖDER (Brigitte); ENGEL (Andreas K.)
AF :	Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf/20246 Hamburg/Allemagne (1 aut., 2 aut., 3 aut., 5 aut.); Centre for Integrative Neuroscience, University of Tübingen/72076 Tübingen/Allemagne (2 aut.); Biological Psychology and Neuropsychology, University of Hamburg/20146 Hamburg/Allemagne (4 aut.)
DT :	Publication en série; Niveau analytique
SO :	Brain; ISSN 0006-8950; Royaume-Uni; Da. 2012; Vol. 135; No. p. 3; Pp. 922-934; Bibl. 1 p.3/4
LA :	Anglais
EA :	Many studies have shown that the visual cortex of blind humans is activated in non-visual tasks. However, the electrophysiological signals underlying this cross-modal plasticity are largely unknown. Here, we characterize the neuronal population activity in the visual and auditory cortex of congenitally blind humans and sighted controls in a complex cognitive task. We recorded magnetoencephalographic responses from participants performing semantic categorization of meaningful sounds that followed the presentation of a semantically related or unrelated haptic object. Source analysis of the spectrally resolved magnetoencephalography data revealed that: (i) neuronal responses to sounds were stronger and longer lasting in the auditory cortex of blind subjects; (ii) auditory stimulation elicited strong oscillatory responses in the visual cortex of blind subjects that closely resembled responses to visual stimulation in sighted humans; (iii) the signal in the gamma frequency range was modulated by semantic congruency between the sounds and the preceding haptic objects; and (iv) signal power in the gamma range was correlated on a trial-by-trial basis between auditory and visual cortex in blind subjects, and the strength of this correlation was modulated by semantic congruency. Our results suggest that specifically oscillatory activity in the gamma range reflects non-visual processing in the visual cortex of blind individuals. Moreover, our results provide evidence that the deprived visual cortex is functionally integrated into a larger network that serves non-visual functions.
CC :	002B17; 002B17F
FD :	Cécité; Pathologie du système nerveux; Cortex visuel; Cortex auditif; Congénital; Plasticité; Oscillation; Magnétoencéphalographie
FG :	Encéphale; Système nerveux central; Voie visuelle; Voie auditive; Pathologie de l'oeil; Trouble de la vision
ED :	Blindness; Nervous system diseases; Visual cortex; Auditory cortex; Congenital; Plasticity; Oscillation; Magnetoencephalography
EG :	Encephalon; Central nervous system; Visual pathway; Auditory pathway; Eye disease; Vision disorder
SD :	Ceguera; Sistema nervioso patología; Corteza visual; Corteza auditiva; Congénito; Plasticidad; Oscilación; Magnetoencefalografía
LO :	INIST-998.354000508460970210
ID :	12-0129775

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Pascal:12-0129775

Le document en format XML

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<fC03 i1="03" i2="X" l="ENG"><s0>Visual cortex</s0>
<s5>09</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Corteza visual</s0>
<s5>09</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Cortex auditif</s0>
<s5>10</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Auditory cortex</s0>
<s5>10</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Corteza auditiva</s0>
<s5>10</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Congénital</s0>
<s5>11</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Congenital</s0>
<s5>11</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Congénito</s0>
<s5>11</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Plasticité</s0>
<s5>12</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Plasticity</s0>
<s5>12</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Plasticidad</s0>
<s5>12</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Oscillation</s0>
<s5>13</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Oscillation</s0>
<s5>13</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Oscilación</s0>
<s5>13</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Magnétoencéphalographie</s0>
<s5>14</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Magnetoencephalography</s0>
<s5>14</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Magnetoencefalografía</s0>
<s5>14</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Encéphale</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Encephalon</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Encéfalo</s0>
<s5>37</s5>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Système nerveux central</s0>
<s5>38</s5>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Central nervous system</s0>
<s5>38</s5>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Sistema nervioso central</s0>
<s5>38</s5>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Voie visuelle</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Visual pathway</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Vía visual</s0>
<s5>39</s5>
</fC07>
<fC07 i1="04" i2="X" l="FRE"><s0>Voie auditive</s0>
<s5>40</s5>
</fC07>
<fC07 i1="04" i2="X" l="ENG"><s0>Auditory pathway</s0>
<s5>40</s5>
</fC07>
<fC07 i1="04" i2="X" l="SPA"><s0>Vía auditiva</s0>
<s5>40</s5>
</fC07>
<fC07 i1="05" i2="X" l="FRE"><s0>Pathologie de l'oeil</s0>
<s5>41</s5>
</fC07>
<fC07 i1="05" i2="X" l="ENG"><s0>Eye disease</s0>
<s5>41</s5>
</fC07>
<fC07 i1="05" i2="X" l="SPA"><s0>Ojo patología</s0>
<s5>41</s5>
</fC07>
<fC07 i1="06" i2="X" l="FRE"><s0>Trouble de la vision</s0>
<s5>42</s5>
</fC07>
<fC07 i1="06" i2="X" l="ENG"><s0>Vision disorder</s0>
<s5>42</s5>
</fC07>
<fC07 i1="06" i2="X" l="SPA"><s0>Trastorno visión</s0>
<s5>42</s5>
</fC07>
<fN21><s1>100</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 12-0129775 INIST</NO>
<ET>Functionally specific oscillatory activity correlates between visual and auditory cortex in the blind</ET>
<AU>SCHEPERS (Inga M.); HIPP (Joerg F.); SCHNEIDER (Till R.); RÖDER (Brigitte); ENGEL (Andreas K.)</AU>
<AF>Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf/20246 Hamburg/Allemagne (1 aut., 2 aut., 3 aut., 5 aut.); Centre for Integrative Neuroscience, University of Tübingen/72076 Tübingen/Allemagne (2 aut.); Biological Psychology and Neuropsychology, University of Hamburg/20146 Hamburg/Allemagne (4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Brain; ISSN 0006-8950; Royaume-Uni; Da. 2012; Vol. 135; No. p. 3; Pp. 922-934; Bibl. 1 p.3/4</SO>
<LA>Anglais</LA>
<EA>Many studies have shown that the visual cortex of blind humans is activated in non-visual tasks. However, the electrophysiological signals underlying this cross-modal plasticity are largely unknown. Here, we characterize the neuronal population activity in the visual and auditory cortex of congenitally blind humans and sighted controls in a complex cognitive task. We recorded magnetoencephalographic responses from participants performing semantic categorization of meaningful sounds that followed the presentation of a semantically related or unrelated haptic object. Source analysis of the spectrally resolved magnetoencephalography data revealed that: (i) neuronal responses to sounds were stronger and longer lasting in the auditory cortex of blind subjects; (ii) auditory stimulation elicited strong oscillatory responses in the visual cortex of blind subjects that closely resembled responses to visual stimulation in sighted humans; (iii) the signal in the gamma frequency range was modulated by semantic congruency between the sounds and the preceding haptic objects; and (iv) signal power in the gamma range was correlated on a trial-by-trial basis between auditory and visual cortex in blind subjects, and the strength of this correlation was modulated by semantic congruency. Our results suggest that specifically oscillatory activity in the gamma range reflects non-visual processing in the visual cortex of blind individuals. Moreover, our results provide evidence that the deprived visual cortex is functionally integrated into a larger network that serves non-visual functions.</EA>
<CC>002B17; 002B17F</CC>
<FD>Cécité; Pathologie du   système nerveux; Cortex visuel; Cortex auditif; Congénital; Plasticité; Oscillation; Magnétoencéphalographie</FD>
<FG>Encéphale; Système nerveux central; Voie visuelle; Voie auditive; Pathologie de l'oeil; Trouble de la vision</FG>
<ED>Blindness; Nervous system diseases; Visual cortex; Auditory cortex; Congenital; Plasticity; Oscillation; Magnetoencephalography</ED>
<EG>Encephalon; Central nervous system; Visual pathway; Auditory pathway; Eye disease; Vision disorder</EG>
<SD>Ceguera; Sistema nervioso patología; Corteza visual; Corteza auditiva; Congénito; Plasticidad; Oscilación; Magnetoencefalografía</SD>
<LO>INIST-998.354000508460970210</LO>
<ID>12-0129775</ID>
</server>
</inist>
</record>

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Functionally specific oscillatory activity correlates between visual and auditory cortex in the blind

Functionally specific oscillatory activity correlates between visual and auditory cortex in the blind

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