In the wake of proposals to introduce commercial casinos in Japan, a research team led by Yoshifumi Miyazaki, Professor Emeritus at the Centre for Environment, Health, and Field Sciences at Chiba University, Japan, sought to explore the potential of nature therapy, particularly insect sounds, in reducing stress responses among individuals with GD. The team aimed to compare the physiological and psychological effects of nature and city sounds on patients with GD.
The research team, which comprised Hiroko Ochiai from the Department of Plastic and Reconstructive Surgery, National Hospital Organization Tokyo Medical Center; assistant professor Harumi Ikei and research fellow Hyunju Jo from the Center for Environment, Health and Field Sciences, Chiba University; and Masayuki Ohishi from Ohishi Clinic, Yokohama, Japan, made their study published in the Journal of Integrative and Complementary Medicine.
Nature Therapy for Gambling Addiction
The study recruited 22 Japanese male participants aged between 25 and 60 years with a diagnosis of pathological gambling based on a total score of 5 or higher on the South Oaks Gambling Screen scale. The participants were randomized into two groups and exposed to either digital nature sounds of insects or traffic sounds at a city intersection, which were presented in a counterbalanced manner.
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As part of testing the physiological effects of exposure, the autonomic nervous activity of the participants was measured using sensors for heart rate variability, and a near-infrared spectroscopy system was used to measure changes in oxyhemoglobin (oxy-Hb) concentrations in their bilateral prefrontal cortex. Participants’ subjective evaluation was done using the modified version of the semantic differential method questionnaire, and the Profiles of Mood States, second edition (POMS2); this formed part of the psychological effects assessment.
The results of the study strongly indicated that nature-based stimulus exposures induced physiological relaxation and other positive responses among individuals with GD. There was a significant decrease in oxy-Hb concentration in the bilateral prefrontal cortex of participants while listening to nature sounds. Put simply; it made them feel more relaxed and positive. This was corroborated by the low POMS2 negative emotions subscale scores and was attested by improvement in participants’ overall mood, a sense of comfort, and relaxation.
Noting the importance of the study, Prof. Miyazaki says, “It has also been reported that people are spending more time at home and are under stress related to the COVID-19 pandemic. These circumstances strongly point to the need for familiar relaxation methods. The results of this experiment suggest that the auditory stimulation of nature-derived sounds is also beneficial for patients with GD.”
In all fairness, the findings of this study highlight the importance of nature sounds in managing negative emotional states in patients with GD.
“Nature therapy may be useful for stress reduction in various patient groups and the general population, especially as our society becomes more artificialized and stress levels increase. As scientific evidence continues to accumulate, various nature-derived stimuli, including the auditory stimulus used in this study, may contribute to reducing stress in people,” concludes Prof. Miyazaki.
Source: Eurekalert
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