When adaptive control fails: Slow recovery of reduced rapid online control during reaching under reversed vision

	When adaptive control fails: Slow recovery of reduced rapid online control during reaching under reversed vision
	Kuang, Shenbing1,2,3 ; Gail, Alexander 2,3
摘要	Previous studies have shown that short-term exposure to mirror-reversed visual feedback suppresses rapid online control (ROC) of arm movements in response to a sudden target displacement. Here we tested if the reduced ROC under reversed vision can be observed for natural reaches without target perturbations, i.e. without corrective movements that are driven by visual input perturbation. Second, we ask if such ROC reduction generalizes to movement phases without visual feedback of the hand. Subjects were instructed to perform simple reach movements towards a stationary target position either under normal or physically reversed vision of the hand during the late movement phase. We quantified time-resolved ROC via a coefficient of determination of the reach trajectories over the full course of the movement. As for other measures in previous studies, we found that our perturbation-independent ROC was reduced within a few trials after exposure to reversed visual feedback. The reduced ROC was restricted to late movement phases, and was not observed in early movement phases. We further asked if subjects would be able to re-gain ROC with prolonged exposure to the reversed visual input. ROC gradually and incompletely increased over the course of 400 exposure trials, affecting both early and late movement phases. Our results show that under reversed vision ROC is reduced even for perturbation-independent natural reaches aiming at stationary targets. (C) 2014 Elsevier Ltd. All rights reserved.
关键词	Rapid online control Visually-guided reaching Reversed visual feedback Offline adaptation Internal model
	2015-05-01
语种	英语
发表期刊	VISION RESEARCH
ISSN	0042-6989
卷号	110 期号:0 页码:155-165
期刊论文类型	Article
收录类别	SCI
WOS记录号	WOS:000355349100003
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/13373
专题	脑与认知科学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Psychol, State Key Lab Brain & Cognit Sci, Beijing 100101, Peoples R China 2.German Primate Ctr, Gottingen, Germany 3.Bernstein Ctr Computat Neurosci, Gottingen, Germany
第一作者单位	脑与认知科学国家重点实验室
推荐引用方式 GB/T 7714	Kuang, Shenbing,Gail, Alexander. When adaptive control fails: Slow recovery of reduced rapid online control during reaching under reversed vision[J]. VISION RESEARCH,2015,110(0):155-165.
APA	Kuang, Shenbing,&Gail, Alexander.(2015).When adaptive control fails: Slow recovery of reduced rapid online control during reaching under reversed vision.VISION RESEARCH,110(0),155-165.
MLA	Kuang, Shenbing,et al."When adaptive control fails: Slow recovery of reduced rapid online control during reaching under reversed vision".VISION RESEARCH 110.0(2015):155-165.

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