气候变化领域集成服务门户(CCPortal): Learning to silence saccadic suppression

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DOI	10.1073/pnas.2012937118
	Learning to silence saccadic suppression
	Scholes C.; McGraw P.V.; Roach N.W.
发表日期	2021
ISSN	00278424
卷号	118 期号:6
英文摘要	Perceptual stability is facilitated by a decrease in visual sensitivity during rapid eye movements, called saccadic suppression. While a large body of evidence demonstrates that saccadic programming is plastic, little is known about whether the perceptual consequences of saccades can be modified. Here, we demonstrate that saccadic suppression is attenuated during learning on a standard visual detection-in-noise task, to the point that it is effectively silenced. Across a period of 7 days, 44 participants were trained to detect brief, low-contrast stimuli embedded within dynamic noise, while eye position was tracked. Although instructed to fixate, participants regularly made small fixational saccades. Data were accumulated over a large number of trials, allowing us to assess changes in performance as a function of the temporal proximity of stimuli and saccades. This analysis revealed that improvements in sensitivity over the training period were accompanied by a systematic change in the impact of saccades on performance-robust saccadic suppression on day 1 declined gradually over subsequent days until its magnitude became indistinguishable from zero. This silencing of suppression was not explained by learning-related changes in saccade characteristics and generalized to an untrained retinal location and stimulus orientation. Suppression was restored when learned stimulus timing was perturbed, consistent with the operation of a mechanism that temporarily reduces or eliminates saccadic suppression, but only when it is behaviorally advantageous to do so. Our results indicate that learning can circumvent saccadic suppression to improve performance, without compromising its functional benefits in other viewing contexts. © This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY).
英文关键词	Microsaccades; Perceptual learning; Saccadic suppression
语种	英语
scopus关键词	adult; article; clinical article; controlled study; eye position; female; human; human experiment; learning; male; noise; saccadic eye movement; saccadic suppression; vision
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180745
作者单位	Visual Neuroscience Group, School of Psychology, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
推荐引用方式 GB/T 7714	Scholes C.,McGraw P.V.,Roach N.W.. Learning to silence saccadic suppression[J],2021,118(6).
APA	Scholes C.,McGraw P.V.,&Roach N.W..(2021).Learning to silence saccadic suppression.Proceedings of the National Academy of Sciences of the United States of America,118(6).
MLA	Scholes C.,et al."Learning to silence saccadic suppression".Proceedings of the National Academy of Sciences of the United States of America 118.6(2021).