Dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task

Abstract Selective spatial attention enhances task performance at restricted regions within the visual field. The magnitude of this effect depends on the level of attentional load, which determines the efficiency of distractor rejection. Mechanisms of attentional load include perceptual selection an...

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Autores principales:	Linyan Xue, Dan Huang, Tong Wang, Qiyi Hu, Xinyu Chai, Liming Li, Yao Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/93ab109dfbe74be58f9f8dc967803676
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spelling	oai:doaj.org-article:93ab109dfbe74be58f9f8dc9678036762021-12-02T11:53:05ZDynamic modulation of the perceptual load on microsaccades during a selective spatial attention task10.1038/s41598-017-16629-22045-2322https://doaj.org/article/93ab109dfbe74be58f9f8dc9678036762017-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-16629-2https://doaj.org/toc/2045-2322Abstract Selective spatial attention enhances task performance at restricted regions within the visual field. The magnitude of this effect depends on the level of attentional load, which determines the efficiency of distractor rejection. Mechanisms of attentional load include perceptual selection and/or cognitive control involving working memory. Recent studies have provided evidence that microsaccades are influenced by spatial attention. Therefore, microsaccade activities may be exploited to help understand the dynamic control of selective attention under different load levels. However, previous reports in humans on the effect of attentional load on microsaccades are inconsistent, and it is not clear to what extent these results and the dynamic changes of microsaccade activities are similar in monkeys. We trained monkeys to perform a color detection task in which the perceptual load was manipulated by task difficulty with limited involvement of working memory. Our results indicate that during the task with high perceptual load, the rate and amplitude of microsaccades immediately before the target color change were significantly suppressed. We also found that the occurrence of microsaccades before the monkeys’ detection response deteriorated their performance, especially in the hard task. We propose that the activity of microsaccades might be an efficacious indicator of the perceptual load.Linyan XueDan HuangTong WangQiyi HuXinyu ChaiLiming LiYao ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Linyan Xue Dan Huang Tong Wang Qiyi Hu Xinyu Chai Liming Li Yao Chen Dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task
description	Abstract Selective spatial attention enhances task performance at restricted regions within the visual field. The magnitude of this effect depends on the level of attentional load, which determines the efficiency of distractor rejection. Mechanisms of attentional load include perceptual selection and/or cognitive control involving working memory. Recent studies have provided evidence that microsaccades are influenced by spatial attention. Therefore, microsaccade activities may be exploited to help understand the dynamic control of selective attention under different load levels. However, previous reports in humans on the effect of attentional load on microsaccades are inconsistent, and it is not clear to what extent these results and the dynamic changes of microsaccade activities are similar in monkeys. We trained monkeys to perform a color detection task in which the perceptual load was manipulated by task difficulty with limited involvement of working memory. Our results indicate that during the task with high perceptual load, the rate and amplitude of microsaccades immediately before the target color change were significantly suppressed. We also found that the occurrence of microsaccades before the monkeys’ detection response deteriorated their performance, especially in the hard task. We propose that the activity of microsaccades might be an efficacious indicator of the perceptual load.
format	article
author	Linyan Xue Dan Huang Tong Wang Qiyi Hu Xinyu Chai Liming Li Yao Chen
author_facet	Linyan Xue Dan Huang Tong Wang Qiyi Hu Xinyu Chai Liming Li Yao Chen
author_sort	Linyan Xue
title	Dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task
title_short	Dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task
title_full	Dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task
title_fullStr	Dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task
title_full_unstemmed	Dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task
title_sort	dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/93ab109dfbe74be58f9f8dc967803676
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Dynamic modulation of the perceptual load on microsaccades during a selective spatial attention task

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