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Neurophysiological correlates of mental imagery in different sensory modalities

Identifieur interne : 000B83 ( PascalFrancis/Curation ); précédent : 000B82; suivant : 000B84

Neurophysiological correlates of mental imagery in different sensory modalities

Auteurs : A. J. Fallgatter [Allemagne] ; T. J. Mueller [Allemagne] ; W. K. Strik [Allemagne]

Source :

RBID : Pascal:97-0240557

Descripteurs français

English descriptors

Abstract

Copyright (c) 1996 Elsevier Science B.V. All rights reserved. Mental Imagery is supposed to be a basic phenomenon of conscious mental opera tions, which is exerted in any sensory modality. The aim of the present study wa s to investigate neurophysiological correlates of mental imagery in the visual, the acoustic and tactile modality. For that purpose, word lists were created bas ed on their power to evoke mental imagery in these modalities. Nine young health y volunteers were included. Words were presented on a computer screen with 3-s i ntervals. Evoked electrical activity was recorded simultaneously with a 21-chann el system. After inspection for artifacts and off-line averaging, further analys is was performed in a time range of 250-450 ms, corresponding to the P300 comp onent. Within this range, six topographically stable segments were found. A repea ted measures ANOVA was significant for the left-right directions of the positi ve and of the negative centroid, but not for the anterior-posterior directions . The posterior centroid was most right-located in the visual sensory modality a nd most left-located for tactile imagery; in the acoustic modality it had a midl ine-position. These differences in centroid locations during mental imagery in di fferent sensory modalities can be explained by the underlying activity of differ ent neural generator ensembles, possibly involving modality specific primary cortical areas.© 1997 Elsevier Science B.V. All rights reserved
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A08 01  1  ENG  @1 Neurophysiological correlates of mental imagery in different sensory modalities
A11 01  1    @1 FALLGATTER (A. J.)
A11 02  1    @1 MUELLER (T. J.)
A11 03  1    @1 STRIK (W. K.)
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C03 01  X  ENG  @0 Mental imagery @5 01
C03 01  X  SPA  @0 Imaginería mental @5 01
C03 02  X  FRE  @0 Potentiel évoqué @5 02
C03 02  X  ENG  @0 Evoked potential @5 02
C03 02  X  SPA  @0 Potencial evocado @5 02
C03 03  X  FRE  @0 Electroencéphalographie @5 03
C03 03  X  ENG  @0 Electroencephalography @5 03
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C03 04  X  FRE  @0 Mot @5 05
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C03 04  X  SPA  @0 Palabra @5 05
C03 05  X  FRE  @0 Sensibilité tactile @5 06
C03 05  X  ENG  @0 Tactile sensitivity @5 06
C03 05  X  SPA  @0 Sensibilidad tactil @5 06
C03 06  X  FRE  @0 Vision @5 07
C03 06  X  ENG  @0 Vision @5 07
C03 06  X  SPA  @0 Visión @5 07
C03 07  X  FRE  @0 Audition @5 08
C03 07  X  ENG  @0 Hearing @5 08
C03 07  X  SPA  @0 Audición @5 08
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C07 01  X  ENG  @0 Sensorial perception @5 20
C07 01  X  SPA  @0 Percepción sensorial @5 20
C07 02  X  FRE  @0 Cognition @5 23
C07 02  X  ENG  @0 Cognition @5 23
C07 02  X  SPA  @0 Cognición @5 23
C07 03  X  FRE  @0 Electrophysiologie @5 26
C07 03  X  ENG  @0 Electrophysiology @5 26
C07 03  X  SPA  @0 Electrofisiología @5 26
N21       @1 132

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