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Colour and polarity contributions to global motion perception

Snowden, Robert Jefferson and Edmunds, Robert 1999. Colour and polarity contributions to global motion perception. Vision Research 39 (10) , pp. 1813-1822. 10.1016/S0042-6989(98)00201-6

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Abstract

The influence of the image segmentation cues based on colour and polarity on a motion coherence task were examined. In line with previous reports, when the signal and noise were given unique identities thresholds were much lower than when they were the same, suggesting a strong influence of segmentation. In another paradigm extra noise elements that differed in colour or polarity interfered despite this perceptual segmentation. We suggest that the results when signal and noise have unique identities are attributable to the subjects' ability to attend to a particular location(s) in space. When this strategy was eliminated by presenting the stimuli in the near-periphery or very briefly the effect of the colour or polarity information disappears.

Item Type: Article
Status: Published
Schools: Psychology
Publisher: Elsevier
ISSN: 0042-6989
Last Modified: 04 Jun 2017 04:10
URI: http://orca-mwe.cf.ac.uk/id/eprint/33870

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