Elsevier

Vision Research

Volume 30, Issue 10, 1990, Pages 1467-1474
Vision Research

The influence of spatial frequency on perceived temporal frequency and perceived speed

https://doi.org/10.1016/0042-6989(90)90027-IGet rights and content

Abstract

Speed matching experiments were conducted using drifting gratings of different spatial frequencies in order to assess the influence of spatial frequency on perceived speed. It was found that gratings of high spatial frequency appear to drift more slowly than low spatial frequency gratings of the same actual velocity. The perceived temporal frequency of a counterphase grating similarly declines as spatial frequency increases. The previously reported effect of temporal frequency on perceived spatial frequency probably does not contribute to these phenomena. Our results suggest that the motion sensors thought to operate within different spatial frequency ranges have different velocity transfer functions, a fact not incorporated in existing computational models of motion perception.

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