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Observations on the effects on spindle primary endings of the stimulation at low frequency of dynamic beta-axons

F Emonet-Dénand1, Y Laporte

  • 1Laboratoire de Neurophysiologie, Collège de France, 75231 Paris Cedex 05, France.

Brain Research
|September 10, 2013
PubMed

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Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...