Effect of rotating acoustic stimulus on heart rate variability in healthy adults
| Autor: | Bhaskar Roy, S.K. Ghatak, Sasmit Sarangi, Raghabendra Choudhuri, Sajal Bandopadhyay, Ambarish Pandey |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
medicine.medical_specialty
Rotating Acoustic Stimuli Speech recognition Beat (acoustics) Heart Rate Variability Stimulation Stimulus (physiology) Autonomic Nervous System Article Psychiatry and Mental health Autonomic nervous system Neurology Internal medicine Heart rate medicine Cardiology Poincaré plot Heart rate variability Neurology (clinical) Poincaré Plot Psychology Detrended Fluctuation Analysis (DFA) Binaural recording |
| Zdroj: | The Open Neurology Journal |
| ISSN: | 1874-205X |
| Popis: | Acoustic stimulus can modulate the Autonomic Nervous System. However, previous reports on this topic are conflicting and inconclusive. In this study we have shown, how rotating acoustic stimulus, a novel auditory binaural stimulus, can change the autonomic balance of the cardiac system. We have used Heart rate Variability (HRV), an indica- tor of autonomic modulation of heart, both in time and frequency domain to analyze the effect of stimulus on 31 healthy adults. A decrease in the heart rate accompanied with an increase in SD and RMSSD indices on linear analysis was observed post-stimulation. In the Poincare Plot, Minor Axis (SD1), Major Axis (SD2) and the ratio SD12 (SD1/SD2) increased af- ter the stimulation. Post stimulus greater increment of SD12 with higher lag numbers of (M) beat to beat intervals, when compared to pre stimulus values, resulted in increased curvilinearity in the SD12 vs. Lag number plot. After stimulation, value of exponent alpha of Dretended Flactuation Analysis of HRV was found to be decreased. From these characteristic responses of the heart after the stimulus, it appears that rotating acoustic stimulus may be beneficial for the sympatho- vagal balance of the heart. |
| Databáze: | OpenAIRE |
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