Temporal sorting of neural components underlying phonological processing.

Détails

ID Serval
serval:BIB_FFBD40DDBA39
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Temporal sorting of neural components underlying phonological processing.
Périodique
Neuroreport
Auteur(s)
Thierry G., Boulanouar K., Kherif F., Ranjeva J.P., Démonet J.F.
ISSN
0959-4965 (Print)
ISSN-L
0959-4965
Statut éditorial
Publié
Date de publication
1999
Volume
10
Numéro
12
Pages
2599-2603
Langue
anglais
Notes
Publication types: Clinical Trial ; Journal ArticlePublication Status: ppublish
Résumé
Event-related haemodynamic responses (EHRs) were recorded in subjects performing phonological tasks to test whether distinguishable temporal involvement of corresponding neural components would show through. A sequence of activation leading from primary auditory cortices to premotor regions emerged in the fast repetition and the phoneme monitoring tasks used. EHRs peaked significantly earlier in Wernicke's area (phonological decoding) than in Broca's area, the left supramarginal gyrus and the precentral gyrus (phonological rehearsal). Moreover, the sensitivity of within cluster temporal gradients to the nature of the tasks indicated either sensory to association cortex synchronization for fast repetition or delayed analysis for phoneme monitoring. These results are consistent with previous findings on working memory and show that fMRI permits temporal tracking of cognitive activations.
Mots-clé
Adult, Analysis of Variance, Evoked Potentials, Auditory/physiology, Female, Hemodynamics/physiology, Humans, Male, Phonetics, Reaction Time/physiology, Reference Values, Verbal Learning/physiology
Pubmed
Web of science
Création de la notice
22/01/2013 16:04
Dernière modification de la notice
20/08/2019 17:29
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