TY - JOUR
T1 - A mode hypothesis for finger interaction during multi-finger force-production tasks
AU - Danion, Frédéric
AU - Schöner, Gregor
AU - Latash, Mark L.
AU - Li, Sheng
AU - Scholz, John P.
AU - Zatsiorsky, Vladimir M.
PY - 2003/2/1
Y1 - 2003/2/1
N2 - 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.
AB - 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.
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U2 - 10.1007/s00422-002-0336-z
DO - 10.1007/s00422-002-0336-z
M3 - Article
C2 - 12567224
AN - SCOPUS:0043184508
SN - 0340-1200
VL - 88
SP - 91
EP - 98
JO - Biological Cybernetics
JF - Biological Cybernetics
IS - 2
ER -