Figure 3 | Scientific Reports

Figure 3

From: Parkinson patients without tremor show changed patterns of mechanical muscle oscillations during a specific bilateral motor task compared to controls

Figure 3

Exemplary power density spectra of oscillating signals. (a) The four panels above display the PSD of each five trials of the ACC, MMGbi, MMGbra and MMGpect of one PD patient (left side) during the bilateral task. The four panels in the middle show the same for a healthy control. (b) Exemplary power density spectra of one MMGbi signal of a healthy control including the analysis of the power ratio QREL. The proportion of the arithmetic mean (M) of power (P) in the Interval 1 (P3-7 Hz; red) to the sum of the arithmetic means of power in the frequency band of 3 to 7 Hz (red) and 7 to 12 Hz (P7–12 Hz; green) is the parameter of interest.

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