Multisensory auditory-somatosensory interactions in early cortical processing revealed by high-density electrical mapping

Détails

ID Serval
serval:BIB_4E78CB840E57
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Multisensory auditory-somatosensory interactions in early cortical processing revealed by high-density electrical mapping
Périodique
Brain Research. Cognitive Brain Research
Auteur⸱e⸱s
Foxe  J. J., Morocz  I. A., Murray  M. M., Higgins  B. A., Javitt  D. C., Schroeder  C. E.
ISSN
0926-6410
Statut éditorial
Publié
Date de publication
09/2000
Peer-reviewed
Oui
Volume
10
Numéro
1-2
Pages
77-83
Notes
Journal Article
Research Support, U.S. Gov't, P.H.S. --- Old month value: Sep
Résumé
We investigated the time-course and scalp topography of multisensory interactions between simultaneous auditory and somatosensory stimulation in humans. Event-related potentials (ERPs) were recorded from 64 scalp electrodes while subjects were presented with auditory-alone stimulation (1000-Hz tones), somatosensory-alone stimulation (median nerve electrical pulses), and simultaneous auditory-somatosensory (AS) combined stimulation. Interaction effects were assessed by comparing the responses to combined stimulation with the algebraic sum of responses to the constituent auditory and somatosensory stimuli when they were presented alone. Spatiotemporal analysis of ERPs and scalp current density (SCD) topographies revealed AS interaction over the central/postcentral scalp which onset at approximately 50 ms post-stimulus presentation. Both the topography and timing of these interactions are consistent with multisensory integration early in the cortical processing hierarchy, in brain regions traditionally held to be unisensory.
Mots-clé
Acoustic Stimulation Adult Auditory Cortex/*physiology Brain Mapping/*methods Electric Stimulation Electroencephalography Electrophysiology Evoked Potentials, Auditory/*physiology Evoked Potentials, Somatosensory/*physiology Female Humans Male Median Nerve/physiology Scalp/physiology Somatosensory Cortex/*physiology Time Factors
Pubmed
Création de la notice
21/01/2008 10:23
Dernière modification de la notice
20/08/2019 14:04
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