Variations on tremor parameters.
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.
Boose
A.
A
University of Tubingen, Department of Neurology, Hoppe-Seyler-Str. 3, 72076 Tubingen, Germany.
Jentgens
Ch.
C
Spieker
S.
S
Dichgans
J.
J