Muscle spindle discharge in normal and obstructed movements.

摘要: 1. The discharge activity of muscle spindle endings located in tail and hind limb muscles was recorded during voluntary movements the cat. 2. During active shortening receptor-bearing muscles, both primary secondary tended to fall silent. This more pronounced, higher rate shortening. We suggest that unobstructed which velocities exceed 0.2 resting lengths per second (lr/sec), firing patterns afferents are dominated by their responses length variations. At lower than lr/sec, fusimotor action may predominate. 3. When unexpectedly halted, resumed firing, but increases were not as abrupt might have been expected had there strong co-activation skeletomotor neurones. Rather, for types studied, appears quite modest.