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Titolo:
Neural activities during Wisconsin Card Sorting Test - MEG observation
Autore:
Wang, LH; Kakigi, R; Hoshiyama, M;
Indirizzi:
Natl Inst Physiol Sci, Dept Integrat Physiol, Okazaki, Aichi 4448585, Japan Natl Inst Physiol Sci Okazaki Aichi Japan 4448585 i, Aichi 4448585, Japan
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 1, volume: 12, anno: 2001,
pagine: 19 - 31
SICI:
0926-6410(200108)12:1<19:NADWCS>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; INFERIOR PREFRONTAL CORTEX; VISUAL WORKING-MEMORY; FRONTAL-LOBE; TEST-PERFORMANCE; PARIETAL CORTEX; TERM-MEMORY; ACTIVATION; OBJECT; DISSOCIATION;
Keywords:
Wisconsin Card Sorting Test; magnetoencephalography; shifting attention; working memory; prefrontal cortex; supramarginal gyrus;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, LH Natl Inst Physiol Sci, Dept Integrat Physiol, Okazaki, Aichi 4448585, Japan Natl Inst Physiol Sci Okazaki Aichi Japan 4448585 4448585, Japan
Citazione:
L.H. Wang et al., "Neural activities during Wisconsin Card Sorting Test - MEG observation", COGN BRAIN, 12(1), 2001, pp. 19-31

Abstract

The present study recorded activities of magnetoencephalography (MEG) to the presentation of cards, and to the presentation of feedback signals in 12normal subjects while they performed the Wisconsin Card Sorting Test (WCST), to observe temporal and spatial processing during the task, The MEG responses were compared between two different conditions in the presentation both of cards and of feedback signals: the cards proceeded by the first wrong[W1st(C)] and by the 4th correct feedback signals [C4th(C)]; and the feedback of the first wrong [W1st(FB)] and the 4th correct signals [C4th(FB)]. Amulti-dipole model, brain electric source analysis (BESA), was used to explore the dipole sources responsible for the MEG activities, We found that MEG activity differences between the W1st(C) and the C4th(C) condition occurred in the period of 190-220 ms (M190 and M200), and 300-440 ms (M300 and M370) mainly at the supramarginal gyrus, the dorsolateral prefrontal, and the middle and inferior frontal gyrus. MEG differences between the W1st(FB) and the C4th(FB) condition occurred 460-640 ms (M460) after the presentationof the feedback signals, with the activation of the dorsolateral prefrontal cortex and the middle frontal cortex. No significant location differenceswere found between the frontal responses (M370) of the W1st(C) and M460 ofthe W1st(FB). Our results proved that the WCST task activates a broad frontal area and the parieto-frontal network across time streaming. Both shifting attention to the wrong feedback and enhanced visual working memory to the sorting shifting condition of the card presentation occur in the same areas at different time points, (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 15/07/20 alle ore 03:43:09