Estimation of psychomotor delay from the Fitts' law coefficients

doi:10.1007/s00422-009-0336-3

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	Estimation of psychomotor delay from the Fitts' law coefficients
	Beamish, Dan 1; Bhatti, Shabana 2; Chubbs, C. Scott 3; MacKenzie, I. Scott 4; Wu, Jianhong 5; Jing, Zhujun 1
	2009-10-01
发表期刊	BIOLOGICAL CYBERNETICS
ISSN	0340-1200
卷号	101 期号:4 页码:279-296
摘要	An intrinsic property of human motor behavior is a trade-off between speed and accuracy. This is classically described by Fitts' law, a model derived by assuming that the human body has a limited capacity to transmit information in organizing motor behavior. However, Fitts' law can also be realized as an emergent property of movements generated by delayed feedback. In this article, we describe the relationship between the Fitts' law coefficients and the physiological parameters of the underlying delayed feedback circuit: the relaxation rate or time constant, and the psychomotor delay of the feedback process. This relationship is then used to estimate the motor circuit delay of several tasks for which Fitts' law data are available in the literature. We consistently estimate the delay to be between 0 and 112 ms. A further consequence of this model is that not all combinations of slope and Y-intercept in Fitts' law are possible when movements are generated by delayed feedback. In fact, it is only possible for an observed speed-accuracy trade-off to be generated by delayed feedback if the Fitts' law coefficients satisfy -0.482 a parts per thousand currency sign a/b a parts per thousand currency sign 3.343 [bits] where b represents the slope in bits per second and a represents the Y-intercept in seconds. If we assume human movement is generated by delayed feedback, then the Fitts' law coefficients should always be restricted to this range of values.
关键词	Fitts' law Psychomotor delay Motor performance Motor control Neurodynamics
DOI	10.1007/s00422-009-0336-3
语种	英语
资助项目	Chinese Academy of Science ; Natural Sciences and Research Council of Canada ; Canada Research Chairs Program ; Mathematics for Information Technologies and Complex Systems
WOS研究方向	Computer Science ; Neurosciences & Neurology
WOS类目	Computer Science, Cybernetics ; Neurosciences
WOS记录号	WOS:000271442300003
出版者	SPRINGER
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/8100
专题	中国科学院数学与系统科学研究院
通讯作者	Beamish, Dan
作者单位	1.Chinese Acad Sci, Acad Math & Syst Sci, Beijing, Peoples R China 2.York Univ, Dept Biol, Toronto, ON M3J 2R7, Canada 3.Univ Ottawa, Sch Med, Ottawa, ON K1N 6N5, Canada 4.York Univ, Dept Comp Sci & Engn, Toronto, ON M3J 2R7, Canada 5.York Univ, Lab Ind & Appl Math, Toronto, ON M3J 2R7, Canada
推荐引用方式 GB/T 7714	Beamish, Dan,Bhatti, Shabana,Chubbs, C. Scott,et al. Estimation of psychomotor delay from the Fitts' law coefficients[J]. BIOLOGICAL CYBERNETICS,2009,101(4):279-296.
APA	Beamish, Dan,Bhatti, Shabana,Chubbs, C. Scott,MacKenzie, I. Scott,Wu, Jianhong,&Jing, Zhujun.(2009).Estimation of psychomotor delay from the Fitts' law coefficients.BIOLOGICAL CYBERNETICS,101(4),279-296.
MLA	Beamish, Dan,et al."Estimation of psychomotor delay from the Fitts' law coefficients".BIOLOGICAL CYBERNETICS 101.4(2009):279-296.