Contributions of pitch and bandwidth to sound-induced enhancement of visual cortex excitability in humans.

Détails

Ressource 1Télécharger: 23419789_AM.pdf (763.06 [Ko])
Etat: Serval
Version: Author's accepted manuscript
ID Serval
serval:BIB_C76DD503DB79
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Contributions of pitch and bandwidth to sound-induced enhancement of visual cortex excitability in humans.
Périodique
Cortex
Auteur(s)
Spierer L., Manuel A.L., Bueti D., Murray M.M.
ISSN
1973-8102 (Electronic)
ISSN-L
0010-9452
Statut éditorial
Publié
Date de publication
2013
Peer-reviewed
Oui
Volume
49
Numéro
10
Pages
2728-2734
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Résumé
Multisensory interactions have been documented within low-level, even primary, cortices and at early post-stimulus latencies. These effects are in turn linked to behavioral and perceptual modulations. In humans, visual cortex excitability, as measured by transcranial magnetic stimulation (TMS) induced phosphenes, can be reliably enhanced by the co-presentation of sounds. This enhancement occurs at pre-perceptual stages and is selective for different types of complex sounds. However, the source(s) of auditory inputs effectuating these excitability changes in primary visual cortex remain disputed. The present study sought to determine if direct connections between low-level auditory cortices and primary visual cortex are mediating these kinds of effects by varying the pitch and bandwidth of the sounds co-presented with single-pulse TMS over the occipital pole. Our results from 10 healthy young adults indicate that both the central frequency and bandwidth of a sound independently affect the excitability of visual cortex during processing stages as early as 30 msec post-sound onset. Such findings are consistent with direct connections mediating early-latency, low-level multisensory interactions within visual cortices.
Pubmed
Web of science
Création de la notice
24/01/2014 19:47
Dernière modification de la notice
03/03/2018 21:19
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