Attention to action: specific modulation of corticocortical interactions in humans.

Détails

ID Serval
serval:BIB_8C4E62384FA6
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Attention to action: specific modulation of corticocortical interactions in humans.
Périodique
Neuroimage
Auteur(s)
Rowe J., Friston K., Frackowiak R., Passingham R.
ISSN
1053-8119 (Print)
ISSN-L
1053-8119
Statut éditorial
Publié
Date de publication
2002
Volume
17
Numéro
2
Pages
988-998
Langue
anglais
Notes
Publication types: Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Résumé
The prefrontal cortex may exert cognitive control by a general mechanism of attentional selection of neuronal representations. We used functional magnetic resonance imaging to test this hypothesis in the motor system. Normal volunteers were scanned during performance of a simple motor task, with their attention either directed towards their actions, or diverted towards a visual search task, or neither. Attention to action increased activity in prefrontal, premotor and parietal cortex, compared with unattended performance of the same movements. Analysis of cortical activity by structural equation modelling of regional fMRI time series was used to measure effective connectivity among prefrontal, premotor and parietal cortices. Attention to action enhanced effective connectivity between dorsal prefrontal cortex and premotor cortex, whereas non-motor attention diminished it. These effects were not attributable to common inputs from parietal cortex to the prefrontal and premotor cortex. The results suggest a supra-modal role for the dorsal prefrontal cortex in attentional selection, operating within the motor system as well as sensory and mnemonic domains.
Mots-clé
Acoustic Stimulation, Adult, Attention/physiology, Brain Mapping, Cerebral Cortex/physiology, Cues, Female, Fingers/physiology, Humans, Magnetic Resonance Imaging, Male, Models, Neurological, Models, Statistical, Motor Cortex/anatomy & histology, Motor Cortex/physiology, Neural Pathways/anatomy & histology, Neural Pathways/physiology, Photic Stimulation, Prefrontal Cortex/anatomy & histology, Prefrontal Cortex/physiology, Psychomotor Performance/physiology, Reading, Rest/physiology, Visual Perception/physiology
Pubmed
Web of science
Création de la notice
12/09/2011 17:25
Dernière modification de la notice
20/08/2019 14:50
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