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Nonlinearities in early visual processing
Reference
S05780
Principal Investigator / Supervisor
Professor Julie Harris
Co-Investigators /
Co-Supervisors
Institution
Newcastle University
Department
Sch of Biology
Funding type
Research
Value (£)
103,331
Status
Completed
Type
Research Grant
Start date
11/11/1996
End date
11/11/1999
Duration
36 months
Abstract
A widely held assumption is that early visual processing can be characterised by linear spatial filtering. However, there has been recent interest in (1) the observation that movement can be perceived in a direction that has no net motion of image Fourier components, and, (2) that there can be masking of image frequency components by other components that are far away in frequency space. The central question is, can these observations be reconciled with the linear model by the introduction of non-linearities, and if so, where do they occur in the complex cascade of processing? Four sets of experiments are proposed to psychophysically dissect the sequence of linear and non-linear stages in human vision. Of interest is whether pre-cortical non-linear distortion can account for much of the data.
Summary
unavailable
Committee
Closed Committee - Animal Sciences (AS)
Research Topics
X – not assigned to a current Research Topic
Research Priority
X – Research Priority information not available
Research Initiative
X - not in an Initiative
Funding Scheme
X – not Funded via a specific Funding Scheme
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