IJERPH, Vol. 14, Pages 1017: Effects of Visual Stimulation with Bonsai Trees on Adult Male Patients with Spinal Cord Injury International Journal of Environmental Research and Public Health doi: 10.3390/ijerph14091017 Authors: Hiroko Ochiai Chorong Song Harumi Ikei Michiko Imai Yoshifumi Miyazaki Nature therapy has been demonstrated to induce physiological relaxation. The psychophysiological effects of nature therapy (stimulation with bonsai trees) on adult male patients with spinal cord injury (SCI) were examined. Oxyhemoglobin concentration changes in the prefrontal cortex were measured using near-infrared spectroscopy, and heart rate variability was analyzed. Psychological responses were evaluated using the modified semantic differential method and Profile of Mood States (POMS) subscale scores. Visual stimulation of adult male patients with SCI elicited significantly decreased left prefrontal cortex activity, increased parasympathetic nervous activity, decreased sympathetic nervous activity, increased positive feelings, and resulted in lower negative POMS subscale scores. Nature therapy can lead to a state of physiological and psychological relaxation in patients with SCI.
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