title: Longitudinal study of essential tremor.
abstract: We measured wrist tremor and forearm EMG in 18 patients with essential tremor on two occasions separated by periods of 4 to 8 years. The frequency of tremor decreased 0.28 Hz to 3.21 Hz in 10 patients and changed less than 0.25 Hz in the remaining eight patients. Thus, the frequency of essential tremor may decrease over time.
authors.affiliation: Center for Alzheimer Disease and Related Disorders, Southern Illinois University School of Medicine, Springfield 62794-9230.
authors.forename: R J
authors.initials: RJ
authors.lastname: Elble
authors.forename: C
authors.initials: C
authors.lastname: Higgins
authors.forename: L
authors.initials: L
authors.lastname: Hughes
mesh_terms: D000328:Adult; D000368:Aged; D004576:Electromyography; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D013997:Time Factors; D014202:Tremor / Q000503:physiopathology*