Adaptive Increase in Finger Force Variance in Multi - Finger Tasks
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چکیده
9 10 Running title: Fatigue and motor variability 11 12
منابع مشابه
Fatigue and motor redundancy: adaptive increase in finger force variance in multi-finger tasks.
We studied the effects of fatigue of the index finger on indices of force variability in discrete and rhythmic accurate force production tasks performed by the index finger and by all four fingers pressing in parallel. An increase in the variance of the force produced by the fatigued index finger was expected. We hypothesized that the other fingers would also show increased variance of their fo...
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In this research, first, kinematic and dynamic equations of a 4-DOF 3-link robotic finger are derived using Denavit-Hartenberg convention and Lagrange’s formulation. To model the muscles, several springs and dampers are placed between the finger links. Then, two advanced controllers, namely adaptive-robust and adaptive-neural, which can control the robotic finger in presence of parametric uncer...
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When one finger changes its force, other fingers of the hand can show unintended force changes in the same direction (enslaving) and in the opposite direction (error compensation). We tested a hypothesis that externally imposed changes in finger force predominantly lead to error compensation effects in other fingers thus stabilizing the total force. A novel device, the "inverse piano", was used...
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The objective of the study is to examine the effects of age and gender on finger coordination. Twelve young (24 +/- 8 yr; 6 men and 6 women) and 12 elderly (75 +/- 5 yr; 6 men and 6 women) subjects performed single-finger maximal contraction [maximal voluntary contraction (MVC)], four-finger MVC, and four-finger ramp force production tasks by pressing on individual force transducers. A drop in ...
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Title of thesis: EFFECT OF KINETIC DEGREES OF FREEDOM ON MULTI-FINGER FORCE AND MOMENT STABILIZING SYNERGIES Sohit Karol, Master of Arts, 2008 Thesis directed by: Dr Jae Kun Shim, PhD. Department of Kinesiology, Bioengineering and Neuro and Cognitive Science (NACS) The purpose of the present study was to test the principle of motor abundance as compared to motor redundance, by investigating the...
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تاریخ انتشار 2010