UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Tactile-visual links in exogenous spatial attention under different postures: convergent evidence from psychophysics and ERPs

Kennett, S.; Eimer, M.; Spence, C.; Driver, J.; (2001) Tactile-visual links in exogenous spatial attention under different postures: convergent evidence from psychophysics and ERPs. Journal of Cognitive Neuroscience , 13 (4) pp. 462-478. 10.1162/08989290152001899. Green open access

[thumbnail of 4104.pdf]
Preview
PDF
4104.pdf

Download (531kB)

Abstract

Tactile-visual links in spatial attention were examined by presenting spatially nonpredictive tactile cues to the left or right hand, shortly prior to visual targets in the left or right hemifield. To examine the spatial coordinates of any crossmodal links, different postures were examined. The hands were either uncrossed, or crossed so that the left hand lay in the right visual field and vice versa. Visual judgments were better on the side where the stimulated hand lay, though this effect was somewhat smaller with longer intervals between cue and target, and with crossed hands. Event-related brain potentials (ERPs) showed a similar pattern. Larger amplitude occipital N1 components were obtained for visual events on the same side as the preceding tactile cue, at ipsilateral electrode sites. Negativities in the Nd2 interval at midline and lateral central sites, and in the Nd1 interval at electrode Pz, were also enhanced for the cued side. As in the psychophysical results, ERP cueing effects during the crossed posture were determined by the side of space in which the stimulated hand lay, not by the anatomical side of the initial hemispheric projection for the tactile cue. These results demonstrate that crossmodal links in spatial attention can influence sensory brain responses as early as the N1, and that these links operate in a spatial frame-of-reference that can remap between the modalities across changes in posture.

Type: Article
Title: Tactile-visual links in exogenous spatial attention under different postures: convergent evidence from psychophysics and ERPs
Open access status: An open access version is available from UCL Discovery
DOI: 10.1162/08989290152001899
Publisher version: http://dx.doi.org/doi:10.1162/08989290152001899
Language: English
Additional information: Copyright 2001 Massachusetts Institute of Technology
UCL classification: UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
URI: https://discovery.ucl.ac.uk/id/eprint/4104
Downloads since deposit
999Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item