Influence of gaze direction on crossmodal modulation of visual ERPS by endogenous tactile spatial attention

E. Macaluso, J. Driver, J. Van Velzen, M. Eimer

Research output: Contribution to journalArticle

Abstract

Recent evidence indicates that the spatial direction of endogenous covert spatial attention in one sensory modality can crossmodally influence early processing of stimuli in a different modality. However, spatial locations are initially coded according to different frames of reference for different modalities (e.g., body-centered for touch versus retinocentric vision) and postural changes (e.g., gaze shifts) will realign these. Here, we used event-related potentials (ERPs) to investigate how the direction of endogenous tactile attention affects sensory-specific visual ERP components. Critically, by manipulating direction of gaze, we were able to test whether any crossmodal effects depend on visual and tactile projections to a common hemisphere, on common locations in external space, or on some combination of the two. We found that both P1 and N1 visual components were modulated according to the direction of endogenous tactile attention. While the P1 crossmodal effect followed purely hemispheric constraints, the attentional modulation of N1 appeared to combine both anatomical and external spatial constraints.

Original languageEnglish
Pages (from-to)406-417
Number of pages12
JournalCognitive Brain Research
Volume23
Issue number2-3
DOIs
Publication statusPublished - May 2005

    Fingerprint

Keywords

  • Attention
  • ERPs
  • Multimodal
  • Touch
  • Vision

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology

Cite this