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Titolo:
The cognitive neuroscience of sustained attention: where top-down meets bottom-up
Autore:
Sarter, M; Givens, B; Bruno, JP;
Indirizzi:
Ohio State Univ, Dept Psychol, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 ept Psychol, Columbus, OH 43210 USA
Titolo Testata:
BRAIN RESEARCH REVIEWS
fascicolo: 2, volume: 35, anno: 2001,
pagine: 146 - 160
SICI:
0165-0173(200104)35:2<146:TCNOSA>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORTICAL CHOLINERGIC DEAFFERENTATION; BENZODIAZEPINE RECEPTOR LIGANDS; DORSAL NORADRENERGIC BUNDLE; POSTERIOR PARIETAL CORTEX; LOCUS-COERULEUS NEURONS; SIMPLE REACTION-TIME; BASAL FOREBRAIN; PREFRONTAL CORTEX; BEHAVIORAL VIGILANCE; VISUAL-ATTENTION;
Keywords:
attention; cortex; acetylcholine; basal forebrain;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
107
Recensione:
Indirizzi per estratti:
Indirizzo: Sarter, M Ohio State Univ, Dept Psychol, 27 Townshend Hall, Columbus, OH 43210 USA Ohio State Univ 27 Townshend Hall Columbus OH USA 43210 3210 USA
Citazione:
M. Sarter et al., "The cognitive neuroscience of sustained attention: where top-down meets bottom-up", BRAIN RES R, 35(2), 2001, pp. 146-160

Abstract

The psychological construct 'sustained attention' describes a fundamental component of attention characterized by the subject's readiness to detect rarely and unpredictably occurring signals over prolonged periods of time. Human imaging studies have demonstrated that activation of frontal and parietal cortical areas, mostly in the right hemisphere, are associated with sustained attention performance. Animal neuroscientific research has focused on cortical afferent systems, particularly on the cholinergic inputs originating in the basal forebrain, as crucial components of the neuronal network mediating sustained attentional performance. Sustained attention performance-associated activation of the basal forebrain corticopetal cholinergic system is conceptualized as a component of the 'top-down' processes initiated by activation of the 'anterior attention system' and designed to mediate knowledge-driven detection and selection of target stimuli. Activated cortical cholinergic inputs facilitate these processes, particularly under taxing attentional conditions, by enhancing cortical sensory and sensory-associational information processing, including the filtering of noise and distractors. Collectively, the findings from human and animal studies provide the basis for a relatively precise description of the neuronal circuits mediatingsustained attention, and the dissociation between these circuits and thosemediating the 'arousal' components of attention. (C) 2001 Elsevier ScienceB.V. All rights reserved.

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Documento generato il 29/03/20 alle ore 01:59:10