A mode hypothesis for finger interaction during multi-finger force-production tasks

被引:126
作者
Danion, F
Schöner, G
Latash, ML
Li, S
Scholz, JP
Zatsiorsky, VM
机构
[1] Univ Mediterranee, Fac Sci Sport, UMR 6559 Mouvement & Percept, CNRS, F-13288 Marseille 9, France
[2] Ruhr Univ Bochum, Inst Neuroinformat, Bochum, Germany
[3] Penn State Univ, Dept Kinesiol, University Pk, PA USA
[4] Univ Delaware, Dept Phys Therapy, Newark, DE USA
关键词
D O I
10.1007/s00422-002-0336-z
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
Finger forces are known to change involuntarily during multi-finger force-production tasks, even when a finger's involvement in a task is not consciously changed (the enslaving effect). Furthermore, during maximal force-production (MVC) tests, the force produced by a given finger in a multi-finger task is smaller than the force generated by this finger in its single-finger MVC test (the force-deficit effect). A set of hypothetical control variables - modes - is introduced. Modes can be estimated based on individual finger forces during single-finger MVC tests. We show that a simple formal model based on modes with only one free parameter accounts for finger forces during a variety of multi-finger MVC tests. The free parameter accounts for the force deficit effect, and its value depends only on the number of explicitly involved fingers. This approach offers a simple framework for the analysis of finger interaction during multi-finger actions.
引用
收藏
页码:91 / 98
页数:8
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