Computational and psychophysical studies of polarity effects in human visual motion processing. (360G-Wellcome-082816_Z_07_Z)

£126,654

There is currently one widely accepted computational model of the earliest stages of visual motion processing in the brain, known as the motion energy model. Recent psychophysical and physiological results are inconsistent with the model, particularly with regard to responses dependent on the sign of luminance polarity. The proposal aims to develop and test a revised computational model of motion analysis. There are three key goals: 1) The first goal is to develop the revised model and establis h whether it can account for the basic capabilities of human motion perception. 2) Some perceptual effects are consistent with motion processes that respond to both signs of contrast polarity, others are consistent with processes that respond to only one sign of contrast polarity. The second goal is to determine whether the revised model can accommodate both kinds of effect. Predictions will be generated and tested in a series of psychophysical experiments. 3) Perceptual adaptation is a promin ent feature of motion processing, but previous models do not incorporate adaptation. The third goal is to establish whether the revised model provides an adequate explanation of perceptual adaptation.

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Grant Details

Amount Awarded 126654
Applicant Surname Mather
Approval Committee Cognitive and Higher Systems Funding Committee
Award Date 2007-06-28T00:00:00+00:00
Financial Year 2006/07
Grant Programme: Title Project Grant
Internal ID 082816/Z/07/Z
Lead Applicant Prof George Mather
Partnership Value 126654
Planned Dates: End Date 2011-02-03T00:00:00+00:00
Planned Dates: Start Date 2008-02-04T00:00:00+00:00
Recipient Org: Country United Kingdom
Region South East