The Effect of Touching a Dolphin on the EEG Slow Waves in Children

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  • HOMMA Ayako
    Department of Physiology, Showa University School of Medicine Department of Pediatrics, Showa University School of Medicine
  • HARA Hideki
    Department of Physiology, Showa University School of Medicine Faculty of Letters, Kokugakuin University
  • MATSUZAKI Kumiko
    Department of Pediatrics, Showa University School of Medicine
  • SASAKI Miki
    Department of Physiology, Showa University School of Medicine
  • MASAOKA Yuri
    Department of Physiology, Showa University School of Medicine
  • HOMMA Ikuo
    Department of Physiology, Showa University School of Medicine

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説明

Among animal-facilitated therapies, dolphin-facilitated therapy has been shown to beneficially affect human behavior, emotion and speech ability. We recently showed that touching a dolphin reduced the respiratory rate and state anxiety in healthy children. In this study, we collected electroencephalographic data (EEG), widely used for examining various brain functions, before and after touching dolphins. We examined the relationship between EEG power spectra and individual trait anxiety scores. The results showed that the appearance of slow waves in the frontal area increased significantly after touching a dolphin. Furthermore, the difference in slow wave activity was negatively, but significantly, correlated with trait anxiety in the frontal area. This negative correlation showed that slow wave power was greater in subjects with lower trait anxiety, indicating that touching a dolphin may be more effective for subjects with low trait anxiety than those with high trait anxiety. However, even though the increase in slow wave power was lower in subjects with high trait anxiety, touching a dolphin appeared to affect brain rhythms by increasing slow waves.

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