A corticostriatal neural system enhances auditory perception through temporal context processing.

Détails

ID Serval
serval:BIB_B1ACE57B9E95
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
A corticostriatal neural system enhances auditory perception through temporal context processing.
Périodique
Journal of Neuroscience
Auteur⸱e⸱s
Geiser E., Notter M., Gabrieli J.D.
ISSN
1529-2401 (Electronic)
ISSN-L
0270-6474
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
32
Numéro
18
Pages
6177-6182
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't Publication Status: ppublish
Résumé
The temporal context of an acoustic signal can greatly influence its perception. The present study investigated the neural correlates underlying perceptual facilitation by regular temporal contexts in humans. Participants listened to temporally regular (periodic) or temporally irregular (nonperiodic) sequences of tones while performing an intensity discrimination task. Participants performed significantly better on intensity discrimination during periodic than nonperiodic tone sequences. There was greater activation in the putamen for periodic than nonperiodic sequences. Conversely, there was greater activation in bilateral primary and secondary auditory cortices (planum polare and planum temporale) for nonperiodic than periodic sequences. Across individuals, greater putamen activation correlated with lesser auditory cortical activation in both right and left hemispheres. These findings suggest that temporal regularity is detected in the putamen, and that such detection facilitates temporal-lobe cortical processing associated with superior auditory perception. Thus, this study reveals a corticostriatal system associated with contextual facilitation for auditory perception through temporal regularity processing.
Mots-clé
Adult, Cerebral Cortex/physiology, Corpus Striatum/physiology, Cues, Female, Humans, Male, Nerve Net/physiology, Neural Pathways/physiology, Pattern Recognition, Physiological/physiology, Pitch Perception/physiology
Web of science
Open Access
Oui
Création de la notice
03/06/2015 13:37
Dernière modification de la notice
20/08/2019 15:20
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