Postural dependence of reaction time in normal subjects and patients with focal brain lesions.
EMG reaction times (EMG-RTs) of triceps brachii muscle of normal subjects and patients with focal brain lesions were measured at two different positions of the shoulder joint. The difference of EMG-RTs between the two positions was smaller in patients with VL-thalamotomy, cerebellar or frontal premotor lesions than in normal subjects and patients with hemiplegia. It is assumed that cerebellum, VL-nucleus and the premotor area are related to the proprioceptive control of RTs.
D001927:Brain Diseases / Q000503:physiopathology*; D001931:Brain Mapping; D002526:Cerebellar Diseases / Q000503:physiopathology; D002531:Cerebellum / Q000502:physiology; D002561:Cerebrovascular Disorders / Q000503:physiopathology; D005625:Frontal Lobe / Q000502:physiology; D006801:Humans; D010300:Parkinson Disease / Q000503:physiopathology / Q000601:surgery; D011187:Posture; D011930:Reaction Time / Q000502:physiology*; D013787:Thalamic Nuclei / Q000502:physiology / Q000601:surgery