PT - JOURNAL ARTICLE AU - Amin F. Sabra AU - Mark Hallett TI - Action tremor with alternating activity in antagonist muscles AID - 10.1212/WNL.34.2.151 DP - 1984 Feb 01 TA - Neurology PG - 151--151 VI - 34 IP - 2 4099 - http://n.neurology.org/content/34/2/151.short 4100 - http://n.neurology.org/content/34/2/151.full SO - Neurology1984 Feb 01; 34 AB - 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.