A New Concept of the Role of Proprioceptive and Recurrent Inhibitory Feedback in Motor Control

The mammalian motor control system is a multi-variable, nonlinear and time-varying system. With motor capabilities increasing throughout evolution, the nervous system likely has developed particular solutions to cope with the complex properties of its own executive instruments, in particular muscles. It is proposed here that spinal recurrent inhibition via Renshaw cells and proprioceptive feedback via muscle spindles monitor some important variables of muscle function and adapt spinal neural systems to them.

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