Korean J Biol Psychiatry.
2012 Aug;19(3):121-127.
Characteristics of Telepresence by Multisensory Feedback and Related Neural Mechanism in Patients with Schizophrenia : A Functional MRI Study
- Affiliations
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- 1Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea. jaejkim@yonsei.ac.kr
- 2Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, Korea.
- 3Department of Psychiatry, Myongji Hospital, Kwandong University, Goyang, Korea.
- 4Department of Biomedical Engineering, Hanyang University, Seoul, Korea.
- 5Department of Psychiatry, Yonsei University College of Medicine, Seoul, Korea.
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.
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