비가청 주파수 대역을 포함한 산림음이 뇌파에 미치는 영향 연구
Study on the Effects of Forest Sounds including Inaudible Frequency Bands on Brain Waves
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초록
Forest healing programs conducted in forests or recreational forests are known to be very effec- tive in stabilizing the mind and body. This effect is analyzed to be due to the five sensory stimulation factors such as natural scenery, natural sounds, and scents. Among them, this paper focused on sound. In particular, it was esti- mated that HFC (high frequency components) in the inaudible band among the sounds from the forest would help in stabilizing the mind and body. In this study, forest sounds (audible frequency ~ HFC) collected in deep mountains were applied to subjects and the effect of HFC on stabilizing the mind and body was analyzed. Materials and Methods: Forest sounds were collected from the forest and HFC were provided to subjects using high-performance audio. The subjects consisted of 18 people around 45 years of age (SD3.2), and the experiment was conducted in a chamber where noiselessness was guaranteed. The subjects were divided into two groups and HFC were stimulated auditory and tactile. In order to verify the homogeneity between the groups, the same experiment was repeated by cross-applying auditory and tactile sensations to each group. The change in alpha waves was measured using EEG before and after the experiment. Results: Forest sounds were collected by spec- ifying more than 5 forests. HFC were present in all forests, and most were around 31KHz (31,616Hz, SD772). The effect of HFC was verified by reading alpha waves. Both auditory and tactile groups achieved signif- icant results (p<0.002, p<0.0001), and the tactile group was more effective. Conclusion: This experiment was conducted at a very basic level to verify the existence of HFC in the forest and their effects, but it is thought to be sufficient to confirm the possibility. In this study, HFC collection in the forest was conducted at 2-4 PM in early June. HFC are thought to vary depending on the season, time, location, and surrounding environment. Since the changes in HFC and their effects on brain waves may also vary, further experiments will be necessary. It is thought that various technological and industrial applications are possible.
Abstract
Forest healing programs conducted in forests or recreational forests are known to be very effec- tive in stabilizing the mind and body. This effect is analyzed to be due to the five sensory stimulation factors such as natural scenery, natural sounds, and scents. Among them, this paper focused on sound. In particular, it was esti- mated that HFC (high frequency components) in the inaudible band among the sounds from the forest would help in stabilizing the mind and body. In this study, forest sounds (audible frequency ~ HFC) collected in deep mountains were applied to subjects and the effect of HFC on stabilizing the mind and body was analyzed. Materials and Methods: Forest sounds were collected from the forest and HFC were provided to subjects using high-performance audio. The subjects consisted of 18 people around 45 years of age (SD3.2), and the experiment was conducted in a chamber where noiselessness was guaranteed. The subjects were divided into two groups and HFC were stimulated auditory and tactile. In order to verify the homogeneity between the groups, the same experiment was repeated by cross-applying auditory and tactile sensations to each group. The change in alpha waves was measured using EEG before and after the experiment. Results: Forest sounds were collected by spec- ifying more than 5 forests. HFC were present in all forests, and most were around 31KHz (31,616Hz, SD772). The effect of HFC was verified by reading alpha waves. Both auditory and tactile groups achieved signif- icant results (p<0.002, p<0.0001), and the tactile group was more effective. Conclusion: This experiment was conducted at a very basic level to verify the existence of HFC in the forest and their effects, but it is thought to be sufficient to confirm the possibility. In this study, HFC collection in the forest was conducted at 2-4 PM in early June. HFC are thought to vary depending on the season, time, location, and surrounding environment. Since the changes in HFC and their effects on brain waves may also vary, further experiments will be necessary. It is thought that various technological and industrial applications are possible.
참고문헌 (18)
- Nakajima Y, "Stress Recovery Effects of High- and Low-Frequency Amplified Music on Heart Rate Variability", Behav Neurol, pp.5965894~ (2016)
- Akiyama K, "Effect of different frequencies of music on blood pressure regulation in spontaneously hypertensive rats", Neurosci Lett, 487(1), pp.58~60 (2011)
- Mohan UR., "The effects of direct brain stimulation in humans depend on frequency, amplitude, and whitematter proximity", Brain Stimul, 13(5), pp.1183~1195 (2020)
- Söderlund G., "Listen to the noise : noise is beneficial for cognitive performance in ADHD", J Child Psychol Psychiatry, 48(8), pp.840~847 (2007)
- Jo, H.J., "Physiological and Psychological Effects of Forest and Urban Sounds Using High Resolution Sound Sources", International. J. Environment. Public Health, 16, pp.2649~ (2019)
- Oohashi, Tsutomu, "Inaudible high-frequency sounds affect brain activity : hypersonic effect", J Neurophysiology, 83, pp.3548~3558 (2000)
- Fukushima, A., "Frequencies of Inaudible High-Frequency Sounds Differentially Affect Brain Activity : Positive and Negative Hypersonic Effects", PLoS ONE, 9(4), pp.95464~ (2014)
- Nittono, H, "High-frequency sound components of high-resolution audio are not detected in auditory sensory memory", Sci Rep, 10, pp.21740~ (2020)
- Lee JW, "Effects of Forest Therapy Programs on the Stress and Emotional Change of Emotional Labor Workers", Journal of the Korean Institute of Forest Recreation, 22(3), pp.15~22 (2018)
- Kang BH, "Forest therapy program reduces academic and job-seeking stress among college students", Journal of People, Plants, and Environment, 23(3), pp.363~375 (2020)
- Kim SJ, "Therapeutic Effects on Post-traumatic Stress Disorder (PTSD), Shame, and Social Support of Female Victims of Sexual Violence through Participating in Forest Therapy Program", Journal of the Korean Institute of Forest Recreation, 24(4), pp.91~101 (2020)
- Kim IO, "Forest Therapy Program on Probationary Juveniles’ Attitudes Toward Forest and Angry", The Journal of Korean institute of forest recreation, 24(2), pp.31~39 (2020)
- Ha KJ, "The Psychological and Physiological Changes of Forest Healing Program Experience on Employees Exposed to Job Stress", Journal of the Korean Institute of Forest Recreation, 26(3), pp.117~128 (2022)
- Kim JH, "A Study on the Effect of Forest Healing Meditation Experience on Job Stress", Korean Naturopathy Education Association, 3(1), pp.69~83 (2019)
- Roger S. Ulrich, "Stress recovery during exposure to natural and urban environments", Journal of Environmental Psychology, 11(3), pp.201~230 (1991)
- Chiesura, Anna, "The Role of Urban Parks for the Sustainable City", Landscape and Urban Planning, 68(10), pp.129~138 (2004)
- Kellert, Stephen R., "The Biophilia Hypothesis" (1993), Island Press
- Kim KM, "Oh DK, The Psychological Relaxation Effects on Forest Space Type", Journal of the Korean Institute of Forest Recreation, 16(1), pp.87~92 (2012)