Investigation of Surface EMG and Acceleration Signals of Limbs' Tremor in Parkinson's Disease Patients Using the Method of Electrical Activity Analysis Based on Wave Trains

In recent years, spindle-shaped electrical activity became interesting for researchers looking for new methods of time-frequency analysis of electromyograms (EMG) and acceleration (ACC) signals. We call signals of this type as wave trains; a wave train (a wave packet) is an electrical signal that is localized in space, frequency, and time. Examples of wave trains in electroencephalograms (EEG) are alpha spindles, beta spindles, and sleep spindles. We analyze all kinds of wave train electrical activity of the muscles in a wide frequency range. We have developed a new method for analyzing wave train electrical activity of muscles based on wavelet analysis and ROC analysis that enables to study the time-frequency features of EMG and ACC in limbs’ tremor in patients with neurodegenerative diseases such as Parkinson’s disease (PD).

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