特快快速眼动的运动准备过程在微眼跳中的反映

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	特快快速眼动的运动准备过程在微眼跳中的反映
其他题名	Fixational saccades reflect the motor preparation in express saccade
	JingGuang; Bing Li; Mingsha Zhang
	2016
会议名称	2016年第一届北京视觉科学会议
会议日期	2016-07
会议地点	北京
其他摘要	PURPOSE: In primates, vision is the most important sensation to collect information from the environment and guides the behavioral performance. In some occasions, the fast response is needed, such as express saccade, i.e. saccade with extremely short reaction time (latency). Express saccade has been considered to be generated through a short-cut visual-oculomotor pathway, which is usually not functioning. Previous studies suggest that the generation of express saccade requires advanced motor preparation. Motor preparation is a covert cognitive processing and might be contributed by many brain areas. Here we employed the ?xational saccade (micro-saccade) as a behavior probe to study this processing in express saccades. METHOD: We compared the fixational saccade rate under express saccade condition and regular saccade condition. We also analyzed the fixational saccade rate under gap tasks with di?erent gap duration. RESULTS: The results showed that the fixational saccade rate changed differently between express saccade and regular saccade: in short gap duration, the fixational saccade rate decreased much earlier in express saccade than in regular saccades; in medium and long gap durations, it decreased at similar time, but with a following rebound only in the regular saccade. Moreover, comparing between di?erent gap durations, the timing of ?xational saccade rate decrease was more related to the saccade initiation in express saccades, but more related to the physical disappearance of ?xation point in regular saccades. This suggests that the decrease of fixational saccade rate was closely related with saccade preparation in express saccade, but with visual transient in regular saccade. CONCLUSIONS: Fixational saccade rate reflected that there was advanced motor preparation for express saccade.
会议主办者	中国科学院心理研究所
学科领域	感知觉心理学
URL	查看原文
收录类别	其他
语种	英语
文献类型	会议论文
条目标识符	http://ir.psych.ac.cn/handle/311026/20835
专题	心理所主办、承办、协办学术会议_2016年第一届北京视觉科学会议_会议摘要
作者单位	State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, 100875, China
推荐引用方式 GB/T 7714	JingGuang,Bing Li,Mingsha Zhang. 特快快速眼动的运动准备过程在微眼跳中的反映[C],2016.