Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Effect of 2D Forest Video Viewing and Virtual Reality Forest Video Viewing on Stress Reduction in Adults

2D 숲동영상 및 Virtual Reality 숲동영상 시청이 성인의 스트레스 감소에 미치는 영향

  • Hong, Sungjun (Department of Environment & Forest Resources, Chungnam National University) ;
  • Joung, Dawou (Department of Environment & Forest Resources, Chungnam National University) ;
  • Lee, Jeongdo (Department of Environment & Forest Resources, Chungnam National University) ;
  • Kim, Da-young (Department of Environment & Forest Resources, Chungnam National University) ;
  • Kim, Soojin (Department of Environment & Forest Resources, Chungnam National University) ;
  • Park, Bum-Jin (Department of Environment & Forest Resources, Chungnam National University)
  • 홍성준 (충남대학교 산림환경자원학과) ;
  • 정다워 (충남대학교 산림환경자원학과) ;
  • 이정도 (충남대학교 산림환경자원학과) ;
  • 김다영 (충남대학교 산림환경자원학과) ;
  • 김수진 (충남대학교 산림환경자원학과) ;
  • 박범진 (충남대학교 산림환경자원학과)
  • Received : 2019.06.10
  • Accepted : 2019.08.16
  • Published : 2019.09.30
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Abstract

This study was carried out to investigate the effect of watching a two-dimensional (2D) forest video and a virtual reality (VR) forest video on stress reduction in adults. Experiments were conducted in an artificial climate room, and 40 subjects participated. After inducing stress in the subjects, subjects watched a 2D gray video, 2D forest video, or VR forest video for 5 mins. The autonomic nervous system activity was evaluated continuously in terms of measured heart rate variability during the experiment. After each experiment, the subject's psychological state was evaluated using a questionnaire. The 2D forest video decreased the viewer's stress index, increased HF, and reduced heart rate compared with the 2D gray video. The VR forest video had a greater stress index reduction effect, LF/HF increase effect, and heart rate reduction effect than the 2D gray video. Psychological measurements showed that subjects felt more comfortable, natural, and calm when watching the 2D gray video, 2D forest video or VR forest video. We also found that the 2D forest video and VR forest video increased positive emotions and reduced negative emotions compared to the 2D gray video. Based on these results, it can be concluded that watching the 2D forest and VR forest videos reduces the stress index and heart rate compared with watching the 2D gray video. Thus, it is considered that the 2D forest video increases the activity of the parasympathetic nervous system, and the VR forest video increases the activity of the sympathetic nervous system. The increased activity of the sympathetic nervous system upon watching the VR forest video is judged to be positive sympathetic nerve activity, such as novelty and curiosity, and not negative sympathetic activity, such as stress and tension. The results of this study are expected to be the basis for examining the visual effects of forest healing, with hope that the utilization of VR, the technology of the fourth industrial revolution in the forestry field, will broaden.

본 연구는 평면 숲동영상 및 VR 숲동영상 시청이 성인의 스트레스 감소에 미치는 영향을 밝히기 위해 수행되었다. 실험은 인공기후실에서 진행되었으며, 피험자는 40명이 참가하였다. 피험자의 스트레스를 유발한 후 2D 회색동영상, 2D 숲동영상, VR 숲동영상을 5분 동안 시청하게 하였다. 실험하는 동안 연속적으로 심박변동성을 측정하여 자율신경계 활동을 평가하였으며, 각 실험 후 설문지를 이용하여 심리 상태를 평가하였다. 생리적 측정 결과 2D 숲동영상은 2D 회색동영상보다 스트레스 지수 감소효과가 크고, HF 증가효과가 크며, 심장박동수 감소효과가 크다는 사실을 확인하였다. 또한 VR 숲동영상은 2D 회색동영상 시청보다 스트레스 지수 감소효과가 크고, LF/HF 증가효과가 크며, 심장박동수 감소효과가 크다는 사실을 확인하였다. 심리적 측정 결과 피험자들은 2D 회색동영상보다 2D 숲동영상과 VR 숲동영상을 더 쾌적하고, 자연적이며, 진정된다고 느꼈다는 사실을 확인하였다. 그리고 2D 숲동영상과 VR 숲동영상이 2D 회색동영상보다 긍정적인 정서를 증가시키고 부정적인 정서를 감소시킨다는 사실을 확인하였다. 이상의 결과를 바탕으로 2D 숲동영상과 VR 숲동영상의 시청은 스트레스 상황을 벗어나 2D 회색동영상을 시청하는 것보다 더 스트레스 지수를 감소시키고, 심장박동수를 감소시키는 것으로 판단된다. 또한 2D 숲동영상은 부교감 신경계의 활동을 증가시키고 VR 숲동영상은 교감 신경계의 활동을 증가시키는 차이점이 있는 것으로 판단된다. 마지막으로 VR 숲동영상의 교감 신경계의 활동 증가는 스트레스, 긴장 등의 부정적 교감신경 활성이 아닌 신기함, 호기심 등의 긍정적 교감신경 활성으로 판단된다. 이러한 연구의 결과가 산림치유의 시각적 효과에 대한 기반이 되길 기대하고, 임업분야에서 4차 산업혁명의 기술인 VR의 활용이 넓어지는 기반이 되길 기대한다.

Keywords

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