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Figure 3: Standard deviation of normal-to-normal cardiac intervals (Panel A; SDNN), root mean square of successive differences between adjacent cardiac intervals (Panel B; RMSSD), and percentage of adjacent cardiac intervals with difference exceeding 50 ms (Panel C; pNN50). Response to classical music ms = milliseconds. *P < 0.05 vs. control, **P < 0.05 vs. music, P < 0.01 vs. music, #P < 0.001 vs. control

Figure 3: Standard deviation of normal-to-normal cardiac intervals (Panel A; SDNN), root mean square of successive differences between adjacent cardiac intervals (Panel B; RMSSD), and percentage of adjacent cardiac intervals with difference exceeding 50 ms (Panel C; pNN50). Response to classical music ms = milliseconds. *<i>P</i> < 0.05 vs. control, **<i>P</i> < 0.05 vs. music, <sup>†</sup><i>P</i> < 0.01 vs. music, <sup>#</sup><i>P</i> < 0.001 vs. control