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Published on: October 11, 2016
Coherence of plaids comprising components of disparate spatial frequencies
1School of Psychology, University of Wales College of Cardiff.
Abstract:
The limits of plaid coherence were measured in terms of the maximum spatial frequency difference between the components at which coherence is sustained, for a variety of contrasts and speeds. In some circumstances the maximum spatial frequency difference is between three and four octaves. This suggests that one-dimensional components of a moving image are not combined within spatial frequency channels to give overall pattern direction but that there is a pooling of information across spatial frequencies prior to the stage at which pattern direction is computed. Coherence range declines as contrast is decreased or drift speed is increased.
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