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Titolo:
SENSORY GAIN-CONTROL (AMPLIFICATION) AS A MECHANISM OF SELECTIVE ATTENTION - ELECTROPHYSIOLOGICAL AND NEUROIMAGING EVIDENCE
Autore:
HILLYARD SA; VOGEL EK; LUCK SJ;
Indirizzi:
UNIV CALIF SAN DIEGO,DEPT NEUROSCI LA JOLLA CA 92093 UNIV IOWA,DEPT PSYCHOL IOWA CITY IA 52242
Titolo Testata:
Philosophical transactions-Royal Society of London. Biological sciences
fascicolo: 1373, volume: 353, anno: 1998,
pagine: 1257 - 1270
SICI:
0962-8436(1998)353:1373<1257:SG(AAM>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
VISUAL-SPATIAL ATTENTION; EVENT-RELATED POTENTIALS; POSITRON EMISSION TOMOGRAPHY; BILATERAL STIMULUS ARRAYS; INDEX FOCUSED ATTENTION; DIRECTED ATTENTION; NEURAL MECHANISMS; BRAIN POTENTIALS; AREAS V1; CORTEX;
Keywords:
ATTENTION; EVOKED POTENTIALS; ERPS; VISION; PET; VISUAL CORTEX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
72
Recensione:
Indirizzi per estratti:
Citazione:
S.A. Hillyard et al., "SENSORY GAIN-CONTROL (AMPLIFICATION) AS A MECHANISM OF SELECTIVE ATTENTION - ELECTROPHYSIOLOGICAL AND NEUROIMAGING EVIDENCE", Philosophical transactions-Royal Society of London. Biological sciences, 353(1373), 1998, pp. 1257-1270

Abstract

Both physiological and behavioral studies have suggested that stimulus-driven neural activity in the sensory pathways can be modulated in amplitude during selective attention. Recordings of event-related brainpotentials indicate that such sensory gain control or amplification processes play an important role in visual-spatial attention. Combined event-related brain potential and neuroimaging experiments provide strong evidence that attentional gain control operates at an early stage of visual processing in extrastriate cortical areas. These data support early selection theories of attention and provide a basis for distinguishing between separate mechanisms of attentional suppression (of unattended inputs) and attentional facilitation (of attended inputs).

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Documento generato il 22/09/20 alle ore 14:27:44