title: Motor unit activity and stiffness of the contracting muscle fibres in the tonic stretch reflex.
mesh_terms: D000818:Animals; D002415:Cats; D009043:Motor Activity; D009046:Motor Neurons / Q000502:physiology; D009119:Muscle Contraction; D009210:Myofibrils / Q000502:physiology*; D009475:Neurons, Afferent / Q000502:physiology; D012018:Reflex