title: Muscle spindles in muscle control. I. Afferent outflow from frog muscle spindles in open and closed loop modes.
mesh_terms: D000818:Animals; D008465:Mechanoreceptors / Q000502:physiology; D009470:Muscle Spindles / Q000502:physiology*; D009132:Muscles / Q000502:physiology*; D009475:Neurons, Afferent / Q000502:physiology; D011894:Rana pipiens; D013126:Spinal Nerve Roots / Q000502:physiology*; D013314:Stress, Mechanical