1998
DOI: 10.1007/s004220050466
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Coordinated force production in multi-finger tasks: finger interaction and neural network modeling

Abstract: During maximal voluntary contraction (MVC) with several fingers, the following three phenomena are observed: (1) the total force produced by all the involved fingers is shared among the fingers in a specific manner (sharing); (2) the force produced by a given finger in a multi-finger task is smaller than the force generated by this finger in a single-finger task (force deficit); (3) the fingers that are not required to produce any force by instruction are involuntary activated (enslaving). We studied involunta… Show more

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Cited by 236 publications
(239 citation statements)
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“…In particular, the UCM hypothesis was used to analyze covariation of force modes (hypothetical independent elemental variables that lead to force generation by individual digits, Zatsiorsky et al 1998;Scholz et al 2002;Danion et al 2003) with respect to two hypotheses:…”
Section: Implications For the Ucm Hypothesismentioning
confidence: 99%
“…In particular, the UCM hypothesis was used to analyze covariation of force modes (hypothetical independent elemental variables that lead to force generation by individual digits, Zatsiorsky et al 1998;Scholz et al 2002;Danion et al 2003) with respect to two hypotheses:…”
Section: Implications For the Ucm Hypothesismentioning
confidence: 99%
“…to explore the dependence of the direction of forces produced by fingers that are not required to produce force (enslaved forces; Li et al 1998aLi et al , 1998bZatsiorsky et al 1998Zatsiorsky et al , 2000 on the target direction; and 4. to establish whether there is a multi-finger synergy stabilizing the direction of the total force.…”
Section: To Test the Dependence Of Direction Accuracy On Target Forcementioning
confidence: 99%
“…No a priori hypotheses could be formulated with respect to these comparisons. However, differences could be expected based on earlier studies that have shown effects of hand dominance on indices of finger interaction , different ability to control finger forces independently across fingers (typically, the index finger is better controlled individually as compared to the other fingers Zatsiorsky et al 1998Zatsiorsky et al , 2000, and differences in bilateral effects in symmetrical and asymmetrical two-hand tasks (Li et al 2002). Most of the cited studies used maximal force production tasks; thus one cannot readily make predictions with respect to our task of accurate sub-maximal force production.…”
Section: Introductionmentioning
confidence: 99%