PMC9554942_01
Course of heart rate (HR) (note: the time on the X-axis is the recording time from the time the ECG device was applied).
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F1
The maximum HR was recorded at 09:59:52 at 144 beats/min (BMP) (see Figure 1) during the first minutes of the music therapy phase.
HRV parameters from the time domain as well as the representation of the scatterplot.
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F2
Spectrogram (note: the time on the X-axis is the recording time starting from the moment the ECG device was applied).
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F3
The spectrogram of the 24 h-ECG recording, especially during daytime hours, clearly shows an increased sympathetic activation with a decrease of the vagus as a sign of tension (Figure 3).
Course of RR intervals during the first 5 min of music application (2.5 min of pain music and 2.5 min of healing music).
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F4
Figure 4 shows the course of the RR intervals during the 2.5-minute pain music and the first 2.5 min of the healing music.
Frequency for RR difference and for RR histogram during the first 5 min of music application.
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F5
The relative proportion of HF power is 0.9%, LF power 7.7% and VLF 91.4% (see Figure 5).