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Titolo:
Evidence for the transient nature of a neural system supporting goal-directed action
Autore:
West, R; Alain, C;
Indirizzi:
Univ Notre Dame, Dept Psychol, Notre Dame, IN 46556 USA Univ Notre Dame Notre Dame IN USA 46556 Psychol, Notre Dame, IN 46556 USA Baycrest Ctr Geriatr Care, Rotman Res Inst, N York, ON M6A 2W1, Canada Baycrest Ctr Geriatr Care N York ON Canada M6A 2W1 rk, ON M6A 2W1, Canada
Titolo Testata:
CEREBRAL CORTEX
fascicolo: 8, volume: 10, anno: 2000,
pagine: 748 - 752
SICI:
1047-3211(200008)10:8<748:EFTTNO>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANTERIOR CINGULATE CORTEX; STROOP TASK; SUSTAINED ATTENTION; ERROR-DETECTION; BRAIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: West, R Univ Notre Dame, Dept Psychol, Notre Dame, IN 46556 USA Univ NotreDame Notre Dame IN USA 46556 Notre Dame, IN 46556 USA
Citazione:
R. West e C. Alain, "Evidence for the transient nature of a neural system supporting goal-directed action", CEREB CORT, 10(8), 2000, pp. 748-752

Abstract

Disruption of a neural system supporting goal-directed action gives rise to lapses of intention in healthy individuals and disorganized behavior in patients with prefrontal lesions. Evidence from behavioral studies indicatesthat the occurrence of lapses in selective attention, working memory and prospective memory tasks is transient in nature. In the current study, we used event-related brain potentials to demonstrate that lapses are associatedwith a slow wave over the frontal region that begins well before stimulus onset and lasts for several hundred milliseconds. The magnitude of this slow wave was modulated by task demands, indicating that attentional processescan be flexibly allocated in the service of goal-directed action. Togetherthe findings of these experiments indicate that lapses result from a transient inability to bring to bear the goals of the individual upon the actionselection system.

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Documento generato il 19/01/20 alle ore 20:11:37