Parieto-occipital ~10 Hz activity reflects anticipatory state of visual attention mechanisms

John J. Foxe, Gregory V. Simpson, Seppo P. Ahlfors

Research output: Contribution to journalArticle

336 Scopus citations

Abstract

High-density EEG recordings revealed sensory specific modulation of anticipatory parieto-occipital ~10 Hz oscillatory activity when visually presented word cues instructed subjects in an intermodal selective attention paradigm. Cueing attention to the auditory features of imminent compound audio-visual stimuli resulted in significantly higher ~10 Hz amplitude in the period preceding onset of this stimulus than when attention was cued to the visual features. We propose that this parieto-occipital ~10 Hz activity reflects a disengaged visual attentional system in preparation for anticipated auditory input that is attentionally more relevant. Conversely, lower ~10 Hz activity during the attend-visual condition may reflect active engagement of parieto-occipital areas in the anticipatory period. These results support models implicating parieto-occipital areas in the directing and maintenance of visual attention.

Original languageEnglish (US)
Pages (from-to)3929-3933
Number of pages5
JournalNeuroReport
Volume9
Issue number17
DOIs
Publication statusPublished - Dec 1 1998

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Keywords

  • Alpha
  • Attention
  • ERP
  • Intermodal cueing
  • Oscillatory activity
  • Parietal cortex
  • Visual cortex

ASJC Scopus subject areas

  • Neuroscience(all)

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