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\ p None B a = c @ = Z ?N*8 X" 1 Arial1 Arial1 Arial1 Arial1 Arial1 Arial1 Arial General ` Table_3 i: 0 Feature/ Single feature analysis (PD vs. control) No Name Description Sens. Spec.
10 Minimum maximum difference Global maximum of one step, averaged over all steps of one subject minus global minimum of one step, averaged over all steps of one subjectTask A, Gyroscope z-axis 71 44
12 Entropy= Uncertainty measure of the signalTask B, Accelerometer x-axis 62 72
13 Regression line of maxima] Regression line of all local minima and maxima in the signal sequenceTask C, Gyroscope z-axis 67 56
16 Variancea Measure for signal spreading, defined as the square of standard deviationTask A, Gyroscope z-axis 79
17 Root mean squareS Root Mean Square or quadratic mean is a statistical measureTask A, Gyroscope z-axis Task B, Gyroscope z-axis 52 69
22$ Energy in frequency band 0.5 to 3 Hz Energy in a frequency band describes parts of distinct frequencies in the signal, typical frequency bands for specific movements can be definedTask B, Gyroscope z-axis 55
24- Windowed Energy in frequency band 0.5 to 3 Hz Energy in frequency band of 5 second windows with an overlap of 2.5 seconds, windows from complete signal sequence are averagedTask B, Gyroscope z-axis 48
264 Power spectral density in frequency band 0.5 to 3 Hzj Energy measurement, Fourier-transform of the signals cross-correlation with itselfTask B, Gyroscope z-axis 51 Task B, Accelerometer x-axis
28" Regression line of windowed energyj Regression line of energy values from window (2.5 s) moved through signal sequenceTask C, Gyroscope z-axis
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