title: Variations on tremor parameters.
abstract: This paper describes our analysis procedure for long-term tremor EMG recordings, as well as three examples of applications. The description of the method focuses on how characteristics of the tremor (e.g. frequency, intensity, agonist-antagonist interaction) can be defined and calculated based on surface EMG data. The resulting quantitative characteristics are called "tremor parameters." We discuss sinusoidally modulated, band-limited white noise as a model for pathological tremor-EMG, and show how the basic parameters can be extracted from this class of signals. The method is then applied to (1) estimate tremor severity in clinical studies, (2) quantify agonist-antagonist interaction, and (3) investigate the variations of the tremor parameters using simple methods from time-series analysis. (c) 1995 American Institute of Physics.
authors.affiliation: University of Tubingen, Department of Neurology, Hoppe-Seyler-Str. 3, 72076 Tubingen, Germany.
authors.forename: A.
authors.initials: A
authors.lastname: Boose
authors.forename: Ch.
authors.initials: C
authors.lastname: Jentgens
authors.forename: S.
authors.initials: S
authors.lastname: Spieker
authors.forename: J.
authors.initials: J
authors.lastname: Dichgans