| EPSRC Reference: |
GR/J30592/01 |
| Title: |
PSYCHOPHYSICAL STUDIES OF INTERACTIONS BETWEEN FIRST-ORDER & SECOND- ORDER MOTION STIMULI |
| Principal Investigator: |
Mather, Professor G |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Sch of Psychology |
| Organisation: |
University of Sussex |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1993 |
Ends: |
30 November 1996 |
Value (£): |
98,563
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| EPSRC Research Topic Classifications: |
| Vision & Senses - ICT appl. |
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Summary on Grant Application Form |
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1. To establish how first-order and second-order motion stimuli interact to determine perceived direction.2. To elucidate the functional roles of the two processes.Progress:Early pilot studies (on spatial order mixing and temporal order mixing) have been confirmed and extended to reveal that motion processing in the human visual system is served by several neural processes. One process mediates responses to the motion of first-order (intensity-defined) contours, another mediates responses to motion of second-order (texture-defined contours), and a third process responds regardless of order. Order-specific responses predominate, because only weak motion signals are generated by stimuli which require the integration of information across order. Results of the most recent experiments indicate that information from these different processes is not polled inflexibly before judgements about motion are made, but observers have some attentional control over the integration of signals from different neural populations. So far we have investigated this control only in terms of direction judgements. Future experiments will study control over other more subtle aspects of motion analysis.
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Key Findings |
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.sussex.ac.uk |