Physiological action tremor: a basis for understanding alcohol withdrawal tremor.

Tremor measurements were obtained from 12 male volunteers before and during ethanol intoxication. The tremor recorded during extension and flexion of the hand is called physiological action tremor (PAT) and shares many of the same frequency, amplitude, and electromyographic characteristics reported for withdrawal tremor (WT). This report focuses on the relationships of these two tremors and presents further evidence to consider that PAT and WT might be controlled by the same mechanisms.