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Background: The physiological responses to auditory stimulation with music are relevant to understand and provide additional information regarding complementary and alternative therapies. Objectives: Investigate the acute effects of auditory stimulation on the globally chaotic parameters of Heart rate Variability (HRV). Methods: 27 healthy male students. Measurements of the equivalent sound levels were conducted in a soundproof room. The RR-intervals recorded by the portable HR monitor. HRV was analyzed in the following periods: control protocol – the 10-minutes period before the exposure and the 10-minutes period during the exposure to musical auditory stimulation . Results: We have the values of CFP for seven groups for 27 subjects who are undergoing auditory stimulation; hence a grid of 7 by 27 to be assessed. The First Principal Component has a variance of 4.5282 and accounts for 64.7% of the total variance. The Second Principal Component has an eigenvalue of 2.4631 accounting for 99.9% of total variance. When we observe the results of PCA. CFP3 is very weakly influencial with first principal component (PC1) at 0.012; whereas, CFP1 is much more influencial with PC1 of 0.2288. Conclusion: Musical auditory stimulation with a specific classic style did not acutely influence the global chaotic parameters of HRV.

GLOBAL CHAOTIC PARAMETERS OF HEART RATE VARIABILITY DURING EXPOSURE TO MUSICAL AUDITORY STIMULATION