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Intravenous administration of alcohol decreased postural essential tremor but not parkinsonian resting or cerebellar intention tremor. The response to alcohol infusion occurred in all 15 patients studied, whereas only 11 of the 15 had a response to propranolol therapy. Furthermore, the response to ethanol was greater than that due to propranolol.
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Koller et al. (1984) studied this question.
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