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Experimental Brain Research

, Volume 174, Issue 3, pp 510–516 | Cite as

The modulation of crossmodal integration by unimodal perceptual grouping: a visuotactile apparent motion study

  • Georgina Lyons
  • Daniel Sanabria
  • Argiro Vatakis
  • Charles Spence
Research Article

Abstract

We adapted the crossmodal dynamic capture task to investigate the modulation of visuotactile crossmodal integration by unimodal visual perceptual grouping. The influence of finger posture on this interaction was also explored. Participants were required to judge the direction of a tactile apparent motion stream (moving either to the left or to the right) presented to their crossed or uncrossed index fingers. The participants were instructed to ignore a distracting visual apparent motion stream, comprised of either 2 or 6 lights presented concurrently with the tactile stimuli. More crossmodal dynamic capture of the direction of the tactile apparent motion stream by the visual apparent motion stream was observed in the 2-lights condition than in the 6-lights condition. This interaction was not modulated by finger posture. These results suggest that visual intramodal perceptual grouping constrains the crossmodal binding of visual and tactile apparent motion information, irrespective of finger posture.

Keywords

Congruency Effect Apparent Motion Tactile Stimulus Incongruent Trial Perceptual Grouping 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

G. Lyons was supported by the University of Melbourne and A.V. was supported by a Newton Abraham Studentship from the Medical Sciences Division, University of Oxford. Correspondence regarding this report should be directed to either Georgina Lyons or Charles Spence, Department of Experimental Psychology, South Parks Road, OX1 3UD, Oxford, UK. E-mail: g.lyons2@ugrad.unimelb.edu.au or charles.spence@psy.ox.ac.uk.

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Georgina Lyons
    • 1
    • 2
  • Daniel Sanabria
    • 1
  • Argiro Vatakis
    • 1
  • Charles Spence
    • 1
  1. 1.Department of Experimental PsychologyUniversity of OxfordOxfordUK
  2. 2.Faculty of MedicineUniversity of MelbourneMelbourneAustralia

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