Human hand moves proactively to the external stimulus: an evolutional strategy for minimizing transient error

We investigated particularly the proactive nature of the visual-motor system by steady and transient experiments of a hand-tracking task, and confirmed that the hand motion precedes on the average the target motion in steady runs within a finite frequency range of the sinusoidal target motion. The q...

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Bibliographic Details
Published inPhysical review letters Vol. 93; no. 16; p. 168105
Main Authors Ishida, Fumihiko, Sawada, Yasuji E
Format Journal Article
LanguageEnglish
Published United States 15.10.2004
Subjects
Adult
Biological Evolution
Hand - physiology
Humans
Male
Movement - physiology
Psychomotor Performance - physiology
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Summary:We investigated particularly the proactive nature of the visual-motor system by steady and transient experiments of a hand-tracking task, and confirmed that the hand motion precedes on the average the target motion in steady runs within a finite frequency range of the sinusoidal target motion. The question why and how much the hand motion should precede was answered by frequency-jump experiments. The results implied that the positive phase shift of the hand motion represents the proactive nature of the visual-motor control system which is adaptationally developed for each person to minimize the transient error of the hand motion when the target motion changes unexpectedly.
ISSN:0031-9007
DOI:10.1103/physrevlett.93.168105