On the spatio-temporal determinants of some motion effects.

In a series of recent experiments we have examined the effects of varying the spatio-temporal determinants of some motion configurations on the geometric properties of the perceived motions. For both apparent motion and the kinetic depth effect (being two representative motion sources) specific spatio-temporal frequency and phase limits have been determined with respect to the various (geometrically defined) percepts Finally, a network is proposed which enables predictions about perceived motion loci (and other geometric features), based on the equating of the observed spatio-temporal limits with the bandwidth for a filtering mechanism.