Heart rate variability increases following automated acoustic slow wave sleep enhancement

Charmaine Diep; Suzanne Ftouni; Sean P. A. Drummond; Gary Garcia‐Molina; Clare Anderson

doi:10.1111/jsr.13545

Heart rate variability increases following automated acoustic slow wave sleep enhancement

Charmaine Diep, Suzanne Ftouni, Sean P. A. Drummond, Gary Garcia‐Molina, Clare Anderson^*

^*Corresponding author for this work

Psychology

Research output: Contribution to journal › Article › peer-review

Abstract

Acoustic stimulation has been shown to enhance slow wave sleep and in turn, cognition, and now cardiac outcomes in young adults. With the emergence of commercial acoustic devices in the home, we sought to examine the impact of an acoustic, slow wave enhancing device on heart rate variability in healthy, middle-aged males (n = 24, 39.92 ± 4.15 years). Under highly controlled conditions, the participants were randomised to receive closed-loop brain state-dependent stimulation in the form of auditory tones (STIM), or no tones (SHAM), in a crossover design, separated by a 1 week washout period. STIM and SHAM were compared on measures of heart rate variability for the whole night and over the first three sleep cycles. We found an increase in slow wave activity following STIM compared with SHAM. There was a significant increase in high frequency power and standard deviation of the normalised RR-intervals (SDNN) during the STIM condition compared with SHAM (p < 0.05), due to changes observed specifically during N3. In conclusion, heart rate variability appears to improve following acoustic slow wave sleep enhancement.

Original language	English
Article number	e13545
Number of pages	6
Journal	Journal of Sleep Research
Volume	31
Issue number	5
Early online date	25 Jan 2022
DOIs	https://doi.org/10.1111/jsr.13545
Publication status	Published - Oct 2022

Bibliographical note

Acknowledgments:
We thank the study participants, technicians, staff, and students of the Monash University Sleep and Circadian Medicine Laboratory who supported with data collection, and Stephanie Yiallourou for support with the heart rate variability outcomes and interpretation. We also thank the Cooperative Research Centre for Alertness, Safety and Productivity for research funding.

Keywords

acoustic stimulation
heart rate variability
middle-aged men
slow wave sleep enhancement

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10.1111/jsr.13545

Cite this

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title = "Heart rate variability increases following automated acoustic slow wave sleep enhancement",

abstract = "Acoustic stimulation has been shown to enhance slow wave sleep and in turn, cognition, and now cardiac outcomes in young adults. With the emergence of commercial acoustic devices in the home, we sought to examine the impact of an acoustic, slow wave enhancing device on heart rate variability in healthy, middle-aged males (n = 24, 39.92 ± 4.15 years). Under highly controlled conditions, the participants were randomised to receive closed-loop brain state-dependent stimulation in the form of auditory tones (STIM), or no tones (SHAM), in a crossover design, separated by a 1 week washout period. STIM and SHAM were compared on measures of heart rate variability for the whole night and over the first three sleep cycles. We found an increase in slow wave activity following STIM compared with SHAM. There was a significant increase in high frequency power and standard deviation of the normalised RR-intervals (SDNN) during the STIM condition compared with SHAM (p < 0.05), due to changes observed specifically during N3. In conclusion, heart rate variability appears to improve following acoustic slow wave sleep enhancement.",

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author = "Charmaine Diep and Suzanne Ftouni and Drummond, {Sean P. A.} and Gary Garcia‐Molina and Clare Anderson",

note = "Acknowledgments: We thank the study participants, technicians, staff, and students of the Monash University Sleep and Circadian Medicine Laboratory who supported with data collection, and Stephanie Yiallourou for support with the heart rate variability outcomes and interpretation. We also thank the Cooperative Research Centre for Alertness, Safety and Productivity for research funding.",

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AU - Ftouni, Suzanne

AU - Drummond, Sean P. A.

AU - Garcia‐Molina, Gary

AU - Anderson, Clare

N1 - Acknowledgments: We thank the study participants, technicians, staff, and students of the Monash University Sleep and Circadian Medicine Laboratory who supported with data collection, and Stephanie Yiallourou for support with the heart rate variability outcomes and interpretation. We also thank the Cooperative Research Centre for Alertness, Safety and Productivity for research funding.

PY - 2022/10

Y1 - 2022/10

N2 - Acoustic stimulation has been shown to enhance slow wave sleep and in turn, cognition, and now cardiac outcomes in young adults. With the emergence of commercial acoustic devices in the home, we sought to examine the impact of an acoustic, slow wave enhancing device on heart rate variability in healthy, middle-aged males (n = 24, 39.92 ± 4.15 years). Under highly controlled conditions, the participants were randomised to receive closed-loop brain state-dependent stimulation in the form of auditory tones (STIM), or no tones (SHAM), in a crossover design, separated by a 1 week washout period. STIM and SHAM were compared on measures of heart rate variability for the whole night and over the first three sleep cycles. We found an increase in slow wave activity following STIM compared with SHAM. There was a significant increase in high frequency power and standard deviation of the normalised RR-intervals (SDNN) during the STIM condition compared with SHAM (p < 0.05), due to changes observed specifically during N3. In conclusion, heart rate variability appears to improve following acoustic slow wave sleep enhancement.

AB - Acoustic stimulation has been shown to enhance slow wave sleep and in turn, cognition, and now cardiac outcomes in young adults. With the emergence of commercial acoustic devices in the home, we sought to examine the impact of an acoustic, slow wave enhancing device on heart rate variability in healthy, middle-aged males (n = 24, 39.92 ± 4.15 years). Under highly controlled conditions, the participants were randomised to receive closed-loop brain state-dependent stimulation in the form of auditory tones (STIM), or no tones (SHAM), in a crossover design, separated by a 1 week washout period. STIM and SHAM were compared on measures of heart rate variability for the whole night and over the first three sleep cycles. We found an increase in slow wave activity following STIM compared with SHAM. There was a significant increase in high frequency power and standard deviation of the normalised RR-intervals (SDNN) during the STIM condition compared with SHAM (p < 0.05), due to changes observed specifically during N3. In conclusion, heart rate variability appears to improve following acoustic slow wave sleep enhancement.

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DO - 10.1111/jsr.13545

M3 - Article

SN - 0962-1105

VL - 31

JO - Journal of Sleep Research

JF - Journal of Sleep Research

IS - 5

M1 - e13545

ER -

Heart rate variability increases following automated acoustic slow wave sleep enhancement

Abstract

Bibliographical note

Keywords

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