Effect of Color Light Stimulation Using LED on Sleep Induction Time

Lee, Seon-Jin; Kim, Dong-Wook

doi:10.1155/2017/6030268

Cited by 9 publications

(7 citation statements)

References 15 publications

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“…However, many researchers have reported that 25% of people feel that their sleep quality is not good (Soldatos et al, 2005; Lee M. et al, 2019). Since insufficient sleep is a common problem that leads to considerable health, social, and economic impacts (Hublin et al, 2001), a variety of methods have been developed to improve sleep quality (Besedovsky et al, 2017; Lee and Kim, 2017). Inducing sleep quickly is one way to improve the quality of sleep.…”

Section: Introductionmentioning

confidence: 99%

Possible Effect of Binaural Beat Combined With Autonomous Sensory Meridian Response for Inducing Sleep

Lee

Song

Shin

et al. 2019

Front. Hum. Neurosci.

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Sleep is important to maintain physical and cognitive functions in everyday life. However, the prevalence of sleep disorders is on the rise. One existing solution to this problem is to induce sleep using an auditory stimulus. When we listen to acoustic beats of two tones in each ear simultaneously, a binaural beat is generated which induces brain signals at a specific desired frequency. However, this auditory stimulus is uncomfortable for users to listen to induce sleep. To overcome this difficulty, we can exploit the feelings of calmness and relaxation that are induced by the perceptual phenomenon of autonomous sensory meridian response (ASMR). In this study, we proposed a novel auditory stimulus for inducing sleep. Specifically, we used a 6 Hz binaural beat corresponding to the center of the theta band (4–8 Hz), which is the frequency at which brain activity is entrained during non-rapid eye movement (NREM) in sleep stage 1. In addition, the “ASMR triggers” that cause ASMR were presented from natural sound as the sensory stimuli. In session 1, we combined two auditory stimuli (the 6 Hz binaural beat and ASMR triggers) at three-decibel ratios to find the optimal combination ratio. As a result, we determined that the combination of a 30:60 dB ratio of binaural beat to ASMR trigger is most effective for inducing theta power and psychological stability. In session 2, the effects of these combined stimuli (CS) were compared with an only binaural beat, only the ASMR trigger, or a sham condition. The combination stimulus retained the advantages of the binaural beat and resolved its shortcomings with the ASMR triggers, including psychological self-reports. Our findings indicate that the proposed auditory stimulus could induce the brain signals required for sleep, while simultaneously keeping the user in a psychologically comfortable state. This technology provides an important opportunity to develop a novel method for increasing the quality of sleep.

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Section: Introductionmentioning

confidence: 99%

Possible Effect of Binaural Beat Combined With Autonomous Sensory Meridian Response for Inducing Sleep

Lee

Song

Shin

et al. 2019

Front. Hum. Neurosci.

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“…e stronger influence of GI on the LF/HF-Ratio could therefore be related to the higher influence on the heat balance [20,21]. e LF/HF-Ratio reflects the sympathovagal balance (with higher values indicating a dominance of the sympathetic nervous system) [61]. However, due to its complex nature, the LF/HF-Ratio should be interpreted with caution [62].…”

Section: Discussionmentioning

confidence: 99%

Warm Footbaths with Sinapis nigra or Zingiber officinale Enhance Self-Reported Vitality in Healthy Adults More than Footbaths with Warm Water Only: A Randomized, Controlled Trial

Vagedes

Kuderer

Helmert

et al. 2021

Evidence-Based Complementary and Alternative Medicine

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Objectives. To examine the effects of warm footbaths with thermogenic medicinal powders on vitality and heart rate variability in healthy adults. Intervention and Outcome. Seventeen healthy young adults (22.1 ± 2.4 years, 11 females) received three footbaths (WA: warm water only; GI: warm water and ginger; MU: warm water and mustard) in randomized order with a crossover design. We assessed vitality with the Basler Befindlichkeit questionnaire (BBS) and heart rate variability (HRV) before (t0), immediately after (t1), and 10 minutes following footbaths (t2). The primary outcome measure was self-reported vitality, measured via the BBS, at t1. Results. The primary outcome measure, self-reported vitality, was higher after GI and tended to be higher after MU compared to WA with medium effect sizes (GI vs. WA, mean difference −2.47 (95% CI −5.28 to 0.34), p adj = 0.048 , dadj = 0.74), MU vs. WA, −2.35 (−5.32 to 0.61), p adj = 0.30 , dadj = 0.50). At t2, the standard deviation of beat-to-beat intervals (SDNN) of HRV increased, and the stress index tended to decrease after all three footbath conditions with small to medium effect sizes (0.42–0.66). Conclusion. There is preliminary evidence that footbaths with thermogenic agents GI and MU may increase self-reported vitality during a short-time period with a more pronounced effect with GI. After a short follow-up, all three conditions tended to shift the autonomic balance towards relaxation. Future research should investigate these effects in clinical samples with a larger, more diverse sample size.

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“…Muscle sympathetic nerve activity was found to increase after exposure. Sleep is an autonomic phenomenon, Katsanis et al, [7] reported that exposure to color light stimulation shortened time for sleep onset and influence heart rate variability in healthy humans. Specifically, color light preference was found to lower frequency/high-frequency ratio.…”

Section: Effect Of Photic Stress On Autonomic Nervous Systemmentioning

confidence: 99%

Impacts of Environmental Stressors on Autonomic Nervous System

Adeniyi¹

2022

Autonomic Nervous System - Special Interest Topics

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Stress can be described as the perception of discomforts physically, psychologically, or physico-psychologically. During stress, the perceived discomfort indicates there is a deviation from homeostasis. In stress, there is a nonspecific physiological response to stressors, a group of stress-inducing phenomena. Stress-inducing phenomena can be defined as environmental insults, such as perturbed levels of light, temperature, chemicals, ambient oxygen, and noise. Response to stress occurs via the chemical messenger-mediated sympathetic nervous system including the autonomic-adrenal axis. Furthermore, the chemical messenger-mediated sympathetic nervous system determines nonhormonal effects which are often devised as general stress markers. Examples of general stress markers include changes in heart rate, heart rate variability, blood pressure, body temperature, blood glucose, baroreflex sensitivity, among others.

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Effect of Color Light Stimulation Using LED on Sleep Induction Time

Cited by 9 publications

References 15 publications

Possible Effect of Binaural Beat Combined With Autonomous Sensory Meridian Response for Inducing Sleep

Possible Effect of Binaural Beat Combined With Autonomous Sensory Meridian Response for Inducing Sleep

Warm Footbaths with Sinapis nigra or Zingiber officinale Enhance Self-Reported Vitality in Healthy Adults More than Footbaths with Warm Water Only: A Randomized, Controlled Trial

Impacts of Environmental Stressors on Autonomic Nervous System

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