계명대학교 의학도서관 Repository

Brain Mechanism Involved in the Real Motion Interaction with a Virtual Avatar

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Author(s)
Jeonghun KuHyeongrae LeeJae-Jin KimIn Young KimSun I. Kim
Alternative Author(s)
Ku, Jeong Hun
Department
Dept. of Biomedical Engineering (의용공학과)
Journal Title
Biomedical Engineering Letters
Issued Date
2012
Volume
2
Number
3
Abstract
Purpose

Feeling sense of full immersion in computer-generated interactive environments often occurs when the user is enjoying the contents and physiologically and behaviorally responding to the events from that world as if they were real. In this state, the individual may feel embodied in the simulated world even more than in the real world. Although the method of interaction could influence this embodied state during immersive experiencing, the brain mechanism has not yet been investigated. Here we directly investigate brain activities related to an embodied state according to the type of interaction.


Methods

Our method uses fMRI scanning during interaction with a virtual avatar using a real-action paradigm and using a simple button as a control task.


Results

As the results, we observed the parietal lobe’s laterality corresponded to the type of interaction, the left parietal lobe for action task and the right one for the button click condition. In addition, there was a correlation between the motor cortex activities and the co-presence score for realaction condition. The parietal lobe’s laterality is related to transformation of self egocentrically or allocentrically from a 1st or 3rd person perspective.


Conclusions

Our results provide direct evidence for the involvement of a 1st person perspective embodiment process into a simulated world, particularly into self-avatar, when individual experiences involve a more real-action based interaction method. In contrast, when interacting with simple button-click method, the 3rd person perspective simulation process is recruited for the interaction by controlling the self-avatar rather than experience by oneself with the world.


Keywords
Virtual reality – Avatar – Interaction – Parietal cortex – Presence
Affiliated Author(s)
구정훈
Publisher
School of Medicine
Citation
Jeonghun Ku et al. (2012). Brain Mechanism Involved in the Real Motion Interaction with a Virtual Avatar. Biomedical Engineering Letters, 2(3), 164–172. doi: 10.1007/s13534-012-0068-5
Type
Article
ISSN
2093-9868
Fulltext
https://link.springer.com/article/10.1007%2Fs13534-012-0068-5
DOI
10.1007/s13534-012-0068-5
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/35214
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Biomedical Engineering (의용공학과)
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