What do synergies do? Effects of secondary constraints on multidigit synergies in accurate force-production tasks.

@article{Zhang2008WhatDS,
  title={What do synergies do? Effects of secondary constraints on multidigit synergies in accurate force-production tasks.},
  author={Wei Zhang and John P. Scholz and Vladimir M. Zatsiorsky and Mark L. Latash},
  journal={Journal of neurophysiology},
  year={2008},
  volume={99 2},
  pages={500-13}
}
We used the framework of the uncontrolled manifold (UCM) hypothesis to explore changes in the structure of variability in multifinger force-production tasks when a secondary task was introduced. Healthy young subjects produced several levels of the total force by pressing with the four fingers of the hand on force sensors. The frame with the sensors rested on the table (Stable condition) or on a narrow supporting beam (Unstable conditions) that could be placed between different finger pairs… CONTINUE READING
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