Influence of environmental statistics on inhibition of saccadic return
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...
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Published in | Proceedings of the National Academy of Sciences - PNAS Vol. 107; no. 2; pp. 929 - 934 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
National Academy of Sciences
12.01.2010
National Acad Sciences |
Subjects | |
Online Access | Get full text |
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Summary: | 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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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Edited by Richard M. Shiffrin, Indiana University, Bloomington, IN, and approved November 25, 2009 (received for review June 18, 2009) Author contributions: S.F., C.J.H.L., and I.D.G. designed research; S.F., C.J.H.L., and L.A.E. performed research; S.F., C.J., and L.A.E. analyzed data; and S.F., C.J.H.L., and I.D.G. wrote the paper. |
ISSN: | 0027-8424 1091-6490 |
DOI: | 10.1073/pnas.0906845107 |