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Initiating an eye movement is slowed if the saccade is directed to a location that has been fixated in the recent past. We show that this inhibitory effect is modulated by the temporal statistics of the environment: If a return location is likely to become behaviorally relevant, inhibition of return is absent. By fitting an accumulator model of saccadic decision-making, we show that the inhibitory effect and the sensitivity to local statistics can be dissociated in their effects on the rate of accumulation of evidence, and the threshold controlling the amount of evidence needed to generate a saccade.
|Translated title of the contribution||The influence of environmental statistics on inhibition of saccadic return|
|Pages (from-to)||929 - 934|
|Number of pages||6|
|Journal||Proceedings of the National Academy of Sciences of the United States of America|
|Early online date||22 Dec 2009|
|Publication status||Published - 12 Jan 2010|