| Project/Area Number |
11835027
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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 Institution | SAPPORO MEDICAL UNIVERSITY |
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Principal Investigator |
TANAKA Toshiaki Sapporo Medical University, School of Health Sciences, Associate Professor, 保健医療学部, 助教授 (40248670)
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| Co-Investigator(Kenkyū-buntansha) |
IZUMI Takashi Hokkaido Tokai University, School Engineering, Associate Professor, 工学部, 助教授 (80193374)
IFUKUBE Tohru Hokkaido University, Research Institute for Electroolc Science, Professor, 電子科学研究所, 教授 (70002102)
TAKADA Hidekutsu Sapporo Medical University, School of Health Sciences, Professor, 保健医療学部, 教授 (10048134)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2000: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
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| Keywords | virtual reality / unilateral spatial neglect / rehabilitation engineering / head mounted display / バーチャルリアリティ / リハビリテーション工学 / 視空間失認 / バーチャルリアリティー / 視覚障害 / バランス |
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| Research Abstract |
The aim of our study was to investigate the effect of a head mounted display (HMD) system connected to a computer for improving neglect symptoms as a clinical application of virtual reality. The wide view HMD system was used for a visual display in order to produce a reduced or extended picture. A3 Charge-Coupled device (CCD) camera recorded an object or a view and then visual data was stored into a computer. The computer changed the visual data into a reduced or an extended picture. Finally, the reduced or extended pictures were displayed on the right and left lenses in the HMD system. The HMD system used the reduction rates of 70, 80, 90, and 100 percent of a real picture in the experiment. Six right brain-damaged patients (mean age 67.7 years) who have left hemispatial neglect were selected for this study. We used a line cancellation task that was one of the classic tests for assessing hemispatial neglect. All subjects performed the test first without and then with the HMD.The test trials were carried out under 4 conditions : 70% (70VR+), 80% (80VR+), 90% (90VR+) of reduced visual display and the real image (no reduced visual display ; VR-).
The results showed that all patients improved under 70% (70VR+), 80%(8VR+), and the 90VR+ conditions with use of the HMD as compared to the condition without HMD (VR-). There were significant differences between 90VR+ condition and the VR- condition, and between 90R+ condition and the 70VR+ condition. These results suggest that the HMD system may come to have an important role in the neuropsychological rehabilitation of unilateral spatial neglect.
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