{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T07:48:07Z","timestamp":1768636087321,"version":"3.49.0"},"reference-count":41,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2023,12,13]],"date-time":"2023-12-13T00:00:00Z","timestamp":1702425600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ann Clin Transl Neurol"],"published-print":{"date-parts":[[2024,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background and Objectives<\/jats:title><jats:p>Ethanol has been reported to improve tremor severity in approximately two thirds of patients with essential tremor (ET), but the accuracy of that proportion is not certain and the mechanism of action is unknown. The goal of this study was to investigate alcohol response on tremor by applying an a priori objective response definition and subsequently to describe the responder rate to a standardized ethanol dose in a cohort of 85 ET patients. A secondary analysis evaluated other tremor and nontremor features, including demographics, tremor intensity, breath alcohol concentration, nontremor effects of alcohol, self\u2010reported responder status to ethanol, and prior ethanol exposure.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This was a prospective, open\u2010label, single\u2010dose challenge of oral ethanol during which motor and nonmotor measurements were obtained starting immediately prior to ethanol administration and subsequently every 20\u2009min for 120\u2009min. We defined tremor reduction as a 35% decline in power in the patient's tremor frequency recorded during spiral drawing 60\u2009min after ethanol administration.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In total, 80% of patients were considered alcohol responsive using our objective definition. Responder status and change in the objective tremor metrics were significantly correlated with the change in breath alcohol concentration levels after ethanol administration, but no other relationships to nontremor metrics were found.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>A high percentage of patients actually respond to acute ethanol. However, their self\u2010reported response does not correlate well with their objective response. Objective response correlates with breath alcohol level but not with sedation, indicating a specific effect of ethanol on tremor.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acn3.51943","type":"journal-article","created":{"date-parts":[[2023,12,13]],"date-time":"2023-12-13T08:02:15Z","timestamp":1702454535000},"page":"156-168","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Objective response to ethanol in essential tremor: results from a standardized ethanol challenge study"],"prefix":"10.1002","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6962-9582","authenticated-orcid":false,"given":"Patrick","family":"McGurrin","sequence":"first","affiliation":[{"name":"Office of the Senior Vice President and Provost University of Maryland  College Park Maryland USA"},{"name":"Human Motor Control Section National Institute of Neurological Disorders and Stroke, National Institutes of Health  Bethesda Maryland 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