title: The response to muscle stretch and shortening in Parkinsonian rigidity.
mesh_terms: D000200:Action Potentials; D000368:Aged; D004550:Elbow / Q000503:physiopathology; D004576:Electromyography; D005221:Fatigue / Q000503:physiopathology; D005260:Female; D006801:Humans; D007511:Ischemia / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D009470:Muscle Spindles / Q000187:drug effects; D009132:Muscles / Q000187:drug effects / Q000503:physiopathology*; D010300:Parkinson Disease / Q000503:physiopathology*; D011343:Procaine / Q000494:pharmacology; D012018:Reflex
chemical_list: D011343:Procaine