Physiological and harmonic components in neural and muscular coherence in Parkinsonian tremor.

Journal article

OBJECTIVE: To differentiate physiological from harmonic components in coherence analysis of the tremor-related neural and muscular signals by comparing power, cross-power and coherence spectra. METHODS: Influences of waveform, burst-width and additional noise on generating harmonic peaks in the power, cross-power and coherence spectra were studied using simulated signals. The local field potentials (LFPs) of the subthalamic nucleus (STN) and the EMGs of the contralateral forearm muscles in P...

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Authors: Wang, S; Aziz, T; Stein, J; Bain, P; Liu, X

• Journal: Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
• Volume: 117
• Issue: 7
• Pages: 1487-1498
• Publication date: 2006-07-01
• DOI: 10.1016/j.clinph.2006.03.027
• EISSN: 1872-8952
• ISSN: 1388-2457
• Language: English
• Keywords: Muscle, Skeletal; Spectrum Analysis; Muscle Contraction; Evoked Potentials; Subthalamic Nucleus; Parkinson Disease; Fourier Analysis; Electromyography; Electric Stimulation; Humans; Functional Laterality; Tremor