The tilt aftereffect and adaptation-induced changes in orientation tuning in visual cortex
نویسندگان
چکیده
The tilt aftereffect (TAE) is a visual illusion in which prolonged adaptation to an oriented stimulus causes shifts in the perceptions of subsequent stimuli. Historically, the TAE has been attributed to response suppression of neurons tuned to the adapting orientation. Recent physiological studies of neurons in primary visual cortex (V1) have identified two effects of adaptation: a response suppression at the adapting orientation as well as a shift in the preferred orientations of neurons away from the adapting orientation. Here we construct a population coding model in V1 that includes both factors, and show that both are necessary for quantitatively explaining the TAE. The model suggests that the orientation shifts counteract the response suppression to keep the perceptual errors in orientation small after adaptation.
منابع مشابه
Tilt aftereffect and adaptation-induced changes in orientation tuning in visual cortex.
The tilt aftereffect (TAE) is a visual illusion in which prolonged adaptation to an oriented stimulus causes shifts in subsequent perceived orientations. Historically, neural models of the TAE have explained it as the outcome of response suppression of neurons tuned to the adapting orientation. Recent physiological studies of neurons in primary visual cortex (V1) have confirmed that such respon...
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