Brain activity during stimulus independent thought.

Détails

ID Serval
serval:BIB_0CD08AA015A4
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Brain activity during stimulus independent thought.
Périodique
Neuroreport
Auteur(s)
McGuire P.K., Paulesu E., Frackowiak R.S., Frith C.D.
ISSN
0959-4965 (Print)
ISSN-L
0959-4965
Statut éditorial
Publié
Date de publication
1996
Volume
7
Numéro
13
Pages
2095-2099
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Résumé
The neural correlates of stimulus-independent thoughts (SITs) were investigated in two studies of normal volunteers, using positron emission tomography (PET) and H2(15)O to measure regional cerebral blood flow. Subjects rated how frequently SITs occurred while they were concurrently performing different sets of cognitive tasks. In both studies, the main positive correlations between SITs and blood flow were in the medial prefrontal region. These correlations were not attributable to between-task differences in cognitive demand, or to effects of practice on these demands. An association between medial prefrontal activity and SITs is consistent with data linking this region to self-initiated thought, and its activation during tasks which entail thinking which is decoupled from stimuli in the immediate environment.
Mots-clé
Adult, Auditory Perception, Brain/blood supply, Brain/physiology, Brain Mapping, Cerebrovascular Circulation, Cognition, Gyrus Cinguli/physiology, Humans, Male, Middle Aged, Oxygen Radioisotopes/diagnostic use, Prefrontal Cortex/physiology, Reading, Regional Blood Flow, Temporal Lobe/physiology, Thinking/physiology, Tomography, Emission-Computed/methods
Pubmed
Web of science
Création de la notice
16/09/2011 19:33
Dernière modification de la notice
03/03/2018 13:38
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