Interocular suppression is gated by interocular feature matching

Timothy S. Meese, Robert F. Hess

Research output: Contribution to journalArticle

Abstract

We present a new form of contrast masking in which the target is a patch of low spatial frequency grating (0.46 c/deg) and the mask is a dark thin ring that surrounds the centre of the target patch. In matching and detection experiments we found little or no effect for binocular presentation of mask and test stimuli. But when mask and test were presented briefly (33 or 200 ms) to different eyes (dichoptic presentation), masking was substantial. In a 'half-binocular' condition the test stimulus was presented to one eye, but the mask stimulus was presented to both eyes with zero-disparity. This produced masking effects intermediate to those found in dichoptic and full-binocular conditions. We suggest that interocular feature matching can attenuate the potency of interocular suppression, but unlike in previous work (McKee, S. P., Bravo, M. J., Taylor, D. G., & Legge, G. E. (1994) Stereo matching precedes dichoptic masking. Vision Research, 34, 1047) we do not invoke a special role for depth perception. © 2004 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)9-15
Number of pages7
JournalVision Research
Volume45
Issue number1
DOIs
Publication statusPublished - Jan 2005

Bibliographical note

Annual General Meeting for the Applied-Vision-Association, London (UK), 2003

Keywords

  • contrast matching
  • dichoptic masking
  • human vision
  • inhibition
  • interocular suppression

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