Characteristics of Telepresence by Multisensory Feedback and Related Neural Mechanism in Patients with Schizophrenia : A Functional MRI Study

조현병 환자에서 다감각적 되먹임에 의한 원격현존감 특성 및 관련 신경 기전 : 기능자기공명영상 연구

  • Han, Ki-Wan (Severance Biomedical Science Institute, Yonsei University College of Medicine) ;
  • Choi, Soo-Hee (Institute of Behavioral Science in Medicine, Yonsei University College of Medicine) ;
  • Park, Il-Ho (Department of Psychiatry, Myongji Hospital, Kwandong University) ;
  • Lee, Hyeong-Rae (Department of Biomedical Engineering, Hanyang University) ;
  • Kim, Sun-I. (Department of Biomedical Engineering, Hanyang University) ;
  • Kim, Jae-Jin (Severance Biomedical Science Institute, Yonsei University College of Medicine)
  • 한기완 (연세대학교 의과대학 의생명과학부) ;
  • 최수희 (연세대학교 의과대학 의학행동과학연구소) ;
  • 박일호 (관동대학교 의과대학 명지병원 정신건강의학교실) ;
  • 이형래 (한양대학교 의용생체공학과) ;
  • 김선일 (한양대학교 의용생체공학과) ;
  • 김재진 (연세대학교 의과대학 의생명과학부)
  • Received : 2012.04.10
  • Accepted : 2012.06.07
  • Published : 2012.08.31

Abstract

Objectives : The multimodal telepresence systems have been adopted in a variety of applications, such as telemedicine, space or underwater teleoperation and videoconference. Multimedia, one of the telepresence systems, has been used in various fields including entertainment, education and communication. The degree of subjective telepresence is defined as the probability that a person perceives to be physically in the remote place when he/she experiences a multisensory feedback from the multimedia. The current study aimed to explore the neural mechanism of telepresence related to multisensory feedback in patients with schizophrenia. Methods : Brain activity was measured using functional magnetic resonance imaging while fifteen healthy controls and fifteen patients with schizophrenia were experiencing filmed referential conversation at various distances (1 m, 5 m and 10 m). Correlations between the image contrast values and the telepresence scores were analyzed. Results : Subjective telepresence was not significantly different between the two groups. Some significant correlations of brain activities with the telepresence scores were found in the left postcentral gyrus, bilateral inferior frontal gyri, right fusiform gyrus, and left superior temporal sulcus. There were no main effects of group and distance. Conclusion : These results suggest that patients with schizophrenia experience telepresence as appropriately as healthy people do when exposed to multimedia. Therefore, patients with schizophrenia would have no difficulty in immersing themselves in multimedia which may be used in clinical training therapies.

Keywords

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