title: Action tremor with alternating activity in antagonist muscles.
abstract: Action tremors due to alternating activity in antagonist muscles create different clinical manifestations. Tremors range in frequency from 2.5 to 7 Hz and may be brought out by either posture or goal-directed movement. Using physiologic criteria, tremors can be divided into groups with possible pharmacologic implications.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002526:Cerebellar Diseases / Q000150:complications; D004576:Electromyography; D006801:Humans; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000150:complications; D009132:Muscles / Q000503:physiopathology*; D010523:Peripheral Nervous System Diseases / Q000150:complications; D014202:Tremor / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology*