Dynamic crossmodal links revealed by steady-state responses in auditory-visual divided attention

Ritske de Jong*, Paolo Toffanin, Marten Harbers, Sander Martens

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

25 Citations (Scopus)

Abstract

Frequency tagging has been often used to study intramodal attention but not intermodal attention. We used EEG and simultaneous frequency tagging of auditory and visual sources to study intermodal focused and divided attention in detection and discrimination performance. Divided-attention costs were smaller, but still significant, in detection than in discrimination. The auditory steady-state response (SSR) showed no effects of attention at frontocentral locations, but did so at occipital locations where it was evident only when attention was divided between audition and vision. Similarly, the visual SSR at occipital locations was substantially enhanced when attention was divided across modalities. Both effects were equally present in detection and discrimination. We suggest that both effects reflect a common cause: An attention-dependent influence of auditory information processing on early cortical stages of visual information processing, mediated by enhanced effective connectivity between the two modalities under conditions of divided attention. (C) 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)3-15
Number of pages13
JournalInternational Journal of Psychophysiology
Volume75
Issue number1
DOIs
Publication statusPublished - Jan-2010

Keywords

  • ASSR
  • VSSR
  • Intermodal attention
  • Multisensory integration
  • Crossmodal links
  • EVENT-RELATED POTENTIALS
  • SPATIAL SELECTIVE ATTENTION
  • MULTISENSORY INTEGRATION
  • INTERMODAL ATTENTION
  • LUMINANCE CHANGES
  • CORTEX
  • BRAIN
  • SEARCH
  • TASK
  • PERFORMANCE

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