The influence of environmental statistics on inhibition of saccadic return

SA Farrell; CJH Ludwig; LA Ellis; ID Gilchrist

doi:10.1073/pnas.0906845107

The influence of environmental statistics on inhibition of saccadic return

SA Farrell, CJH Ludwig, LA Ellis, ID Gilchrist

Research output: Contribution to journal › Article (Academic Journal) › peer-review

39 Citations (Scopus)

Abstract

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
Original language	English
Pages (from-to)	929 - 934
Number of pages	6
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	107
Issue number	2
Early online date	22 Dec 2009
DOIs	https://doi.org/10.1073/pnas.0906845107
Publication status	Published - 12 Jan 2010

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AU - Ludwig, CJH

AU - Ellis, LA

AU - Gilchrist, ID

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N2 - 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.

AB - 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.

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U2 - 10.1073/pnas.0906845107

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JF - Proceedings of the National Academy of Sciences of the United States of America

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The influence of environmental statistics on inhibition of saccadic return

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INTEGRATING 'WHEN' AND 'WHERE' IN MODELS OF SACCADE TARGET SELECTION

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The influence of environmental statistics on inhibition of saccadic return

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INTEGRATING 'WHEN' AND 'WHERE' IN MODELS OF SACCADE TARGET SELECTION

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