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Titolo:
Attention-dependent suppression of distracter visual input can be cross-modally cued as indexed by anticipatory parieto-occipital alpha-band oscillations
Autore:
Fu, KMG; Foxe, JJ; Murray, MM; Higgins, BA; Javitt, DC; Schroeder, CE;
Indirizzi:
Nathan S Kline Inst Psychiat Res, Program Cognit Neurosci & Schizophrenia,Cognit Neurophysiol Lab, Orangeburg, NY 10962 USA Nathan S Kline Inst Psychiat Res Orangeburg NY USA 10962 rg, NY 10962 USA Yeshiva Univ Albert Einstein Coll Med, Dept Neurosci, Bronx, NY 10461 USA Yeshiva Univ Albert Einstein Coll Med Bronx NY USA 10461 nx, NY 10461 USA Yeshiva Univ Albert Einstein Coll Med, Dept Psychiat & Behav Sci, Bronx, NY 10461 USA Yeshiva Univ Albert Einstein Coll Med Bronx NY USA 10461 nx, NY 10461 USA NYU, Sch Med, Dept Psychiat, New York, NY 10016 USA NYU New York NY USA 10016 Sch Med, Dept Psychiat, New York, NY 10016 USA
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 1, volume: 12, anno: 2001,
pagine: 145 - 152
SICI:
0926-6410(200108)12:1<145:ASODVI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPATIAL ATTENTION; AREA LIP; CORTEX; MECHANISMS; MACAQUE; MODULATION; RESPONSES; SYSTEM; LINKS; LOCATIONS;
Keywords:
crossmodal attention; multisensory; event-related potential; alpha-band oscillation; high-density electrical mapping; parieto-occipital cortex; gating; cueing; human;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Foxe, JJ Nathan S Kline Inst Psychiat Res, Program Cognit Neurosci & Schizophrenia,Cognit Neurophysiol Lab, 140 Old Orangeburg Rd, Orangeburg, NY 10962 USA Nathan S Kline Inst Psychiat Res 140 Old Orangeburg Rd Orangeburg NYUSA 10962
Citazione:
K.M.G. Fu et al., "Attention-dependent suppression of distracter visual input can be cross-modally cued as indexed by anticipatory parieto-occipital alpha-band oscillations", COGN BRAIN, 12(1), 2001, pp. 145-152

Abstract

Recent studies show that in addition to enhancing neural processing for attentionally relevant stimuli, selective attention also operates by suppressing the processing of distracter stimuli. When subjects are pre-cued to selectively deploy attention during voluntary (endogenous) attentional tasks, these mechanisms can be set up in advance of actual stimulus processing. That is, the brain can be placed in a biased attentional state. Two recent cueing studies have provided evidence for the deployment of such biased attentional states [J.J. Foxe, G.V. Simpson, S.P. Ahlfors, Neuroreport 9 (1998) 3929-3933; M.S. Worden, J.J. Foxe, N. Wang, G.V. Simpson, J. Neurosci. 20:RC63 (2000) 1-6]. Specifically, these studies implicated oscillatory activity in the alpha frequency-band (8-14 Hz) as an anticipatory mechanism for suppressing distracter visual stimulation. The current study extends these findings by showing that this alpha-suppressive effect is also invoked by cross-modal cues. Auditory symbolic cues were used in an intermodal attention task, to direct subjects' attention to a subsequent task in either the visual or auditory modality. Cueing attention to the auditory features of the imminent task stimuli resulted in significantly higher parieto-occipital alpha amplitude in the period preceding onset of this stimulus than when attention was cued to the visual features. Topographic mapping suggests that this effect is generated in regions of the inferior parietal cortex, areas that have been repeatedly implicated in the engagement and maintenance of visual attention. Taken together, the results of this series of studies suggestthat these parietal regions are capable of integrating sensory cues from multiple sensory modalities in order to program the subsequent deployment ofvisual attention. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 08/04/20 alle ore 06:35:56