The role of muscle spindles in constraining motor control

Bjørn Gilbert Nielsen

doi:10.1016/S0925-2312(02)00495-2

The role of muscle spindles in constraining motor control

Bjørn Gilbert Nielsen

Department of Physics

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

The functional importance of gamma-motoneuronal activation during a simple movement task was explored using a computational model of a simplified neuromuscular system, Various schemes of gamma-motoneuronal activation were tested under different task conditions. Analysis of the simulation data lend support to the idea that gamma-motoneuron activity might be essential for cancelling expected stimuli rather than only for programming servo-controlled equilibrium positions of the limbs. It is concluded that the best performance of a movement is obtained when expected afference is cancelled by gamma-activity, thereby allowing for a relatively pure and "noise-free" detection of unexpected loads.

Original language	English
Journal	Neurocomputing
Volume	44
Pages (from-to)	943-949
ISSN	0925-2312
DOIs	https://doi.org/10.1016/S0925-2312(02)00495-2
Publication status	Published - 2002
Event	Computation and Neural Systems Meeting 2001 - San Francisco and Pacific Grove, California, USA Duration: 1 Jan 2001 → … Conference number: 10

Conference

Conference	Computation and Neural Systems Meeting 2001
Number	10
City	San Francisco and Pacific Grove, California, USA
Period	01/01/2001 → …

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AB - The functional importance of gamma-motoneuronal activation during a simple movement task was explored using a computational model of a simplified neuromuscular system, Various schemes of gamma-motoneuronal activation were tested under different task conditions. Analysis of the simulation data lend support to the idea that gamma-motoneuron activity might be essential for cancelling expected stimuli rather than only for programming servo-controlled equilibrium positions of the limbs. It is concluded that the best performance of a movement is obtained when expected afference is cancelled by gamma-activity, thereby allowing for a relatively pure and "noise-free" detection of unexpected loads.

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ER -

The role of muscle spindles in constraining motor control

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