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4341 - 4350
of 7035 results
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AbstractPurpose: Natural time-varying images possess significant temporal correlations which persist even after retinal processing. It has been shown that the LGN improves efficiency of visual representation through temporal decorrelation of the retinal signal (Dong and Atick 1995). But under natural viewing conditions, the temporal correlations are changed significantly by the saccadic eye movements and hence the visual signal sent to the LGN has quite different characteristics for the correlations during, across, and between saccadic eye movements. Methods: Maintaining temporal decorrelation requires that the LGN response also changes according to saccade timing and duration. Based on the recently measured statistical properties of visual input during free viewing of natural time-varying images (Stringer and Dong 2002 SFN), we derive the dynamic temporal receptive-fields that achieve this decorrelation. Results: During and right after a saccade, the predicted receptive-field behaves as a temporal low-pass filter...Nov 5, 2002