Rigidity in man due to spinal interneuron loss.
D000328:Adult; D005260:Female; D006801:Humans; D009046:Motor Neurons / Q000503:physiopathology*; D009474:Neurons / Q000503:physiopathology*; D010300:Parkinson Disease / Q000209:etiology; D013035:Spasm / Q000503:physiopathology* / Q000601:surgery*; D013116:Spinal Cord / Q000601:surgery; D013127:Spinal Nerves / Q000601:surgery