September 2005
Volume 5, Issue 8
Vision Sciences Society Annual Meeting Abstract  |   September 2005
Attentional inhibitory surrounds in orentation space
Author Affiliations
  • Michael N. Tombu
    Centre for Vision Research, York University
  • John K. Tsotsos
    Centre for Vision Research, York University, and Department of Computer Science
Journal of Vision September 2005, Vol.5, 1013. doi:
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      Michael N. Tombu, John K. Tsotsos; Attentional inhibitory surrounds in orentation space. Journal of Vision 2005;5(8):1013. doi:

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      © ARVO (1962-2015); The Authors (2016-present)

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The consequences of attending to points in orientation-space are examined in two experiments. Subjects are cued to attend to lines of a particular orientation, and cue validity (Experiment 1) and probe orientation (Experiment 2) are varied. Performance is directly related to the difference between attended and presented/probed orientations. Performance is superior when these values are coincident, most adversely affected when the presented/probed orientation is near the attended orientation, and intermediate for presented/probed orientations far from the attended orientation. As has been observed in the spatial domain, these results indicate that an inhibitory surround exists when attention is directed to a point in orientation space. These results are discussed in the context of the Selective Tuning Model and the Biased Competition Model.

Tombu, M. N. Tsotsos, J. K. (2005). Attentional inhibitory surrounds in orentation space [Abstract]. Journal of Vision, 5(8):1013, 1013a,, doi:10.1167/5.8.1013. [CrossRef] [PubMed]
 Funding provided by NSERC and CIHR

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