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Titolo:
Location selection in the visual domain
Autore:
Van der Lubbe, RHJ; Woestenburg, JC;
Indirizzi:
Vrije Univ Amsterdam, Dept Cognit Psychol, NL-1081 HV Amsterdam, Netherlands Vrije Univ Amsterdam Amsterdam Netherlands NL-1081 HV erdam, Netherlands
Titolo Testata:
PSYCHOPHYSIOLOGY
fascicolo: 5, volume: 37, anno: 2000,
pagine: 662 - 676
SICI:
0048-5772(200009)37:5<662:LSITVD>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; BILATERAL STIMULUS ARRAYS; INDEX FOCUSED ATTENTION; VISUOSPATIAL ATTENTION; SPATIAL ATTENTION; HUMAN ELECTROPHYSIOLOGY; PERIPHERAL PRECUES; BRAIN POTENTIALS; TREND ANALYSIS; SEARCH;
Keywords:
visual selective attention; location selection; peripheral precues; ERPs;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Van der Lubbe, RHJ Med Univ Lubeck, Dept Neurol, Ratzeburger Allee 160, D-23538 Lubeck, Germany Med Univ Lubeck Ratzeburger Allee 160 Lubeck GermanyD-23538
Citazione:
R.H.J. Van der Lubbe e J.C. Woestenburg, "Location selection in the visual domain", PSYCHOPHYSL, 37(5), 2000, pp. 662-676

Abstract

According to A.H.C. Van der Heijden (1992), attentional selection of visual stimuli can be considered as location selection. Depending on the type oftask, location selection can be considered to be automatic (e.g., in case of abrupt onsets), directly controlled (e.g., in case of symbolic precues),or indirectly controlled (e.g.. in case of visual search). In tasks with symbolic precues a contralateral enhancement of the P1 event-related potential (ERP) component has been found, whereas in visual search tasks a contralateral enhancement of the N2 component has been found. We hypothesized thatboth lateralized effects reflect the influence of location selection, which differs only in its moment of activation. Linear arrays (a target among five distractors, presented at two eccentricities) requiring left or right responses, were preceded by cues indicating either the precise target location or the side of the target, or by bilateral cues that indicated all arraypositions. Array-evoked ERPs, corrected for cue-evoked and interactive effects, showed not only lateralized but also target location-specific effectsfor both components, which supports the view that, defending on the type of task, either the P1 or the N2 component reflect the influence of locationselection.

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Documento generato il 22/09/20 alle ore 13:35:18