Figure 7.

Relations between cardiac autonomic nervous modulations and subjective feelings. Changes in subjective feelings are assumed as the differences from the zero point at the beginning of the session to 30 min. In the silent session, changes in HR before and after the session (ΔHR) are plotted against Δ(Fatigue–Healing) at 30 min (A) and Δ(Anxiety/Tension–Security/Relaxation) at 30 min (B). Changes in the LF/HF ratio before and after the session (ΔLF/HF) are plotted against Δ(Sleepiness–Wakefulness) at 30 min (C) and Δ(Gloomy–Refreshed) at 30 min (D). In the music session, ΔHR-values are plotted against Δ(Fatigue–Healing) at 30 min (E) and Δ(Anxiety/Tension–Security/Relaxation) at 30 min (F). ΔLF/HF-values are plotted against Δ(Sleepiness–Wakefulness) at 30 min (G) and Δ(Gloomy–Refreshed) at 30 min (H). Linear regression lines (red lines), Pearson's correlation coefficients (r), and statistical significances, p-values, are shown.