| Project/Area Number |
16612002
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
人工感覚
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| Research Institution | NIPPON TELEGRAM AND TELEPHONE COOPORATION, NTT Communication Science |
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Principal Investigator |
MAEDA Taro NIPPON TELEGRAM AND TELEPHONE COOPORATION, NTT Communication Science Laboratories, Human and Information Science Laboratory, Sensory and Motor Research Group, Senior Research Scientist, Supervisor, 人間情報研究部感覚運動研究グループ, 主幹研究員 (00260521)
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| Co-Investigator(Kenkyū-buntansha) |
INAMI Masahiko The University of Electro-Communications, Department of Mechanical Engineering and Intelligent Systems, Associate Professor, 知能機械工学科, 助教授 (00345117)
KITAZAKI Mitsuhiro Toyohashi University of Technology, Research Center for Future Vehicle, Associate Professor, 未来ビークルリサーチセンター, 助教授 (90292739)
中川 泰宏 千葉工業大学, 情報科学部・情報ネットワーク学科, 助手 (60348365)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 2005: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2004: ¥2,400,000 (Direct Cost: ¥2,400,000)
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| Keywords | galvanic vestibular stimulation / interface / musical entertainment / sense of acceleration / virtual reality / optical flow / figure-ground reversal / vection |
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| Research Abstract |
The purpose of this Scientific Research was to research and develop applications of galvanic vestibular stimulation as a man-machine interface to generate novel artificial sensation. Galvanic vestibular stimulation (GVS) induces a sensation of virtual acceleration as vestibular information and its application is expected as a wearable interface because it does not need a large device like a motion platform. At first in this study, it was measured the relation between the vection produced by optical flow and that created by galvanic vestibular stimulation. Vection is the illusion of self motion and is most often experienced when an observer views a large screen display containing a translating pattern. This illusion has only limited fidelity and duration unless it is reinforced by confirming vestibular information. GVS can directly produce the sensation of vection. We also developed a novel sensation interface device using GVS. GVS alters subjects' balance. Our device can induce vection (virtual sense of acceleration) synchronized with optic flow or musical rhythms. The device can also induce lateral walking towards the anode while human walking. Over 2000 people had the experiences with these devices as the technical exhibit in SIGGRAPH2005. In particular, GVS with alternating current (AC) can influence vision that mainly consists of a torsional component. In this research aimed also to quantitatively evaluate the effects of GVS on visual perception, and to infer its cause. To investigate these issues, we conducted psychophysical experiments during GVS with AC that consisted of three different image presentation methods ; images fixed on spatial coordinate, head coordinate and retina coordinate systems. It is suggested that the visual motion perception induced by GVS is mediated by eye movements. As well, the stimulus frequency response of the current threshold, at which the subjects perceived visual motion, showed a U-shaped curve for stimulus frequency dependency.
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