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Feedforward stabilization in a bimanual unloading task

โœ Scribed by P. S. Lum; D. J. Reinkensmeyer; Steven L. Lehman; P. Y. Li; L. W. Stark

Book ID
104673329
Publisher
Springer-Verlag
Year
1992
Tongue
English
Weight
767 KB
Volume
89
Category
Article
ISSN
0014-4819

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โœฆ Synopsis

When one hand removes a load from the other hand, feedforward motor commands stabilize the position of the unloaded hand. We studied the stabilization of the postural hand using a novel apparatus that allowed unloading at different rates, and unexpected uncoupling of the unloading force from the postural hand. Feedforward stabilization of hand position was observed in all subjects. This stabilization was achieved both by deactivation of postural agonist muscles and by activation of postural antagonist muscles. The neural feedforward command apparently increased with unloading rate. However, the command only partially canceled the interaction torque generated by removing the load, and stabilization became less effective as unloading rate increased.

๐Ÿ“œ SIMILAR VOLUMES

Feedforward postural stabilization in a
Feedforward postural stabilization in a distal bimanual unloading task
โœ P. Kaluzny; M. Wiesendanger ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 944 KB

The aim of the present study was to investigate postural adjustments and positional stability in a bimanual unloading task, involving essentially the index finger, in order to test whether proactive adjustments are also observed in distal body segments. A second goal of the study was to evaluate the