This reflex is generally believed to depend on the excitation of the primary endings of the spindle by the stretching of the muscle.

Objective To clarify that the fluctuation of the excitability of spinal neural function after ankle sprain, we studied the alteration of H-reflex from the soleus muscle in a patient with ankle sprain.

These researchers found that there were no significant differences in the number, size, or electrophysiological function of reinnervated muscle spindles between the two experimental groups.

Vibration stimulates endings in your muscle spindles. These spindles are tiny sensor-like receptors on your muscles that let your brain know how much they stretch and contract.

Muscle spindles differ from other sensory receptors, such as stretch receptors in the skin, because their sensitivity can be controlled by the nervous system via specialized motor neurons.

The paper adds muscle spindle formation to the growing list of BACE1 in-vivo functions. Another important aspect is that the phenotype only shows up during development and when BACE1 is knocked out or ...

Also, this process can alter muscle spindle reflex activity and stimulate the spinal cord to send a message to the muscle to contract. If uncontrolled this leads to cramps and spasm.