Abnormal motor unit synchronization of antagonist muscles underlies pathological co-contraction in upper limb dystonia
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چکیده
منابع مشابه
An Experiments on Co-Contraction of Antagonist Muscles of Human Limb Using RISE Control
This paper considers an experiments on co-contraction of antagonist muscles of human limb using RISE (robust integral of the sign of the error) control. It is known that some experimental results show that the antagonist muscle and agonist muscle work at the same time, then it is called co-contraction. However, the control method of the antagonist muscle in order to give the electrical impulses...
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It is suggested that co-contraction of antagonist motor units perhaps due to abnormal disynaptic I(a) reciprocal inhibition is responsible for Parkinsonian rigidity. A neural model of Parkinson's disease bradykinesia is extended to incorporate the effects of spindle feedback on key cortical cells and examine the effects of dopamine depletion on spinal activities. Simulation results show that al...
متن کاملSynchronization of motor-unit firings in several human muscles.
1. Synchronization of concurrently active motor-unit firings was studied in six human muscles performing isometric constant-force contractions at 30% of the maximal level. The myoelectric signal was detected with a quadrifilar needle electrode and was decomposed into its constituent motor-unit action-potential trains with the Precision Decomposition technique, whose accuracy has been proven pre...
متن کاملComparison of electrical and co-contraction activity of selected lower limb muscles during manual load lifting with three different technique
Introduction and Aim: Manual handling of loads is a complex dynamic task that involves the upper and lower limbs. Manual handling of loads in sports and daily activities can expose people to unfavorable physical conditions and lead to injury. The study aimed to compare the electrical activity and co-contraction of selected lower limb muscles during manual load lifting with three different techn...
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2005;64;1815-1816 Neurology Pavel Klein and Leonie van Passel epilepsy Effect of stress related to the 9/11/2001 terror attack on seizures in patients with This information is current as of May 2, 2008 http://www.neurology.org/cgi/content/full/64/10/1815 located on the World Wide Web at: The online version of this article, along with updated information and services, is All rights reserved. Pri...
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ژورنال
عنوان ژورنال: Brain
سال: 1998
ISSN: 1460-2156
DOI: 10.1093/brain/121.5.801