[HTML][HTML] Visual motion aftereffects arise from a cascade of two isomorphic adaptation mechanisms
AA Stocker, EP Simoncelli - Journal of Vision, 2009 - iovs.arvojournals.org
Prolonged exposure to a moving stimulus can substantially alter the perceived velocity (both
speed and direction) of subsequently presented stimuli. Here, we show that these changes
can be parsimoniously explained with a model that combines the effects of two isomorphic
adaptation mechanisms, one nondirectional and one directional. Each produces a pattern of
velocity biases that serves as an observable “signature” of the corresponding mechanism.
The net effect on perceived velocity is a superposition of these two signatures. By examining …
speed and direction) of subsequently presented stimuli. Here, we show that these changes
can be parsimoniously explained with a model that combines the effects of two isomorphic
adaptation mechanisms, one nondirectional and one directional. Each produces a pattern of
velocity biases that serves as an observable “signature” of the corresponding mechanism.
The net effect on perceived velocity is a superposition of these two signatures. By examining …
[PDF][PDF] Visual motion aftereffects arise from a cascade of two isomorphic
AA Stocker, EP Simoncelli - 2009 - web-facstaff.sas.upenn.edu
Prolonged exposure to a moving stimulus can substantially alter the perceived velocity (both
speed and direction) of subsequently presented stimuli. Here, we show that these changes
can be parsimoniously explained with a model that combines the effects of two isomorphic
adaptation mechanisms, one nondirectional and one directional. Each produces a pattern of
velocity biases that serves as an observable “signature” of the corresponding mechanism.
The net effect on perceived velocity is a superposition of these two signatures. By examining …
speed and direction) of subsequently presented stimuli. Here, we show that these changes
can be parsimoniously explained with a model that combines the effects of two isomorphic
adaptation mechanisms, one nondirectional and one directional. Each produces a pattern of
velocity biases that serves as an observable “signature” of the corresponding mechanism.
The net effect on perceived velocity is a superposition of these two signatures. By examining …
