The role of actions in auditory object discrimination.

Détails

ID Serval
serval:BIB_B0182D16F8C4
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
The role of actions in auditory object discrimination.
Périodique
NeuroImage
Auteur⸱e⸱s
De Lucia M., Camen C., Clarke S., Murray M.M.
ISSN
1095-9572 (Electronic)
ISSN-L
1053-8119
Statut éditorial
Publié
Date de publication
01/11/2009
Peer-reviewed
Oui
Volume
48
Numéro
2
Pages
475-485
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Action representations can interact with object recognition processes. For example, so-called mirror neurons respond both when performing an action and when seeing or hearing such actions. Investigations of auditory object processing have largely focused on categorical discrimination, which begins within the initial 100 ms post-stimulus onset and subsequently engages distinct cortical networks. Whether action representations themselves contribute to auditory object recognition and the precise kinds of actions recruiting the auditory-visual mirror neuron system remain poorly understood. We applied electrical neuroimaging analyses to auditory evoked potentials (AEPs) in response to sounds of man-made objects that were further subdivided between sounds conveying a socio-functional context and typically cuing a responsive action by the listener (e.g. a ringing telephone) and those that are not linked to such a context and do not typically elicit responsive actions (e.g. notes on a piano). This distinction was validated psychophysically by a separate cohort of listeners. Beginning approximately 300 ms, responses to such context-related sounds significantly differed from context-free sounds both in the strength and topography of the electric field. This latency is >200 ms subsequent to general categorical discrimination. Additionally, such topographic differences indicate that sounds of different action sub-types engage distinct configurations of intracranial generators. Statistical analysis of source estimations identified differential activity within premotor and inferior (pre)frontal regions (Brodmann's areas (BA) 6, BA8, and BA45/46/47) in response to sounds of actions typically cuing a responsive action. We discuss our results in terms of a spatio-temporal model of auditory object processing and the interplay between semantic and action representations.

Mots-clé
Acoustic Stimulation, Adult, Analysis of Variance, Auditory Perception/physiology, Brain/physiology, Brain Mapping, Cluster Analysis, Discrimination (Psychology)/physiology, Electroencephalography, Evoked Potentials, Auditory, Female, Humans, Male, Psychoacoustics, Reaction Time, Task Performance and Analysis, Time Factors, Young Adult
Pubmed
Web of science
Création de la notice
09/03/2010 13:08
Dernière modification de la notice
20/08/2019 16:19
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