Med Biol Eng Comput - A method for continuously assessing the autonomic response to music-induced emotions through HRV analysis.

Tópicos

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Resumo

Interest in therapeutic applications of music has recently increased, as well as the effort to understand the relationship between music features and physiological patterns. In this study, we present a methodology for characterizing music-induced effects on the dynamics of the heart rate modulation. It consists of three steps: (i) the smoothed pseudo Wigner-Ville distribution is performed to obtain a time-frequency representation of HRV; (ii) a parametric decomposition is used to robustly estimate the time-course of spectral parameters; and (iii) statistical population analysis is used to continuously assess whether different acoustic stimuli provoke different dynamic responses. Seventy-five healthy subjects were repetitively exposed to pleasant music, sequences of Shepard tones with the same tempo as the pleasant music and unpleasant sounds overlaid with the same sequences of Shepard tones. Results show that the modification of HRV parameters are characterized by an early fast transient phase (15-20 s), followed by an almost stationary period. All kinds of stimuli provoked significant changes compared to the resting condition, while during listening to pleasant music the heart and respiratory rates were higher (for more than 80% of the duration of the stimuli, p < 10(-5)) and the power of the HF modulation was lower (for more than 70% of the duration of the stimuli, p < 0.05) than during listening to unpleasant stimuli.

Resumo Limpo

interest therapeut applic music recent increas well effort understand relationship music featur physiolog pattern studi present methodolog character musicinduc effect dynam heart rate modul consist three step smooth pseudo wignervill distribut perform obtain timefrequ represent hrv ii parametr decomposit use robust estim timecours spectral paramet iii statist popul analysi use continu assess whether differ acoust stimuli provok differ dynam respons seventyf healthi subject repetit expos pleasant music sequenc shepard tone tempo pleasant music unpleas sound overlaid sequenc shepard tone result show modif hrv paramet character earli fast transient phase s follow almost stationari period kind stimuli provok signific chang compar rest condit listen pleasant music heart respiratori rate higher durat stimuli p power hf modul lower durat stimuli p listen unpleas stimuli

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