| Project/Area Number |
15K16353
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Rehabilitation science/Welfare engineering
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 人工網膜 / 眼球運動 / 視線解析 / 視線検出方法 / 視線計測 / 電気刺激 / 人工臓器 / 人工視覚 / 埋込型医療機器 / ブレインマシンインターフェース / 視覚再生 |
|---|
| Outline of Final Research Achievements |
Retinal prostheses usually use an external camera, which fixed on a head-mounted device. Therefore, it is impossible to change the visual field of prosthetic vision by eye movement. To bring the prosthetic vision closer to natural vision, we proposed gaze feedback system for prosthetic vision. First, we demonstrated the efficacy of the gaze feedback system for improving eye-hand coordination. Then, we developed a prototype system of retinal prosthesis with a gaze feedback system. However, several issues of the prototype were revealed by our study. The main issues were long processing time and heavy device weight. To overcome these issues, we proposed a new eye-tracking method that estimates direction of gaze using stimulus artifacts generated by a retinal prosthesis. To confirm its feasibility, we evaluated the accuracy of the eye-tracking method using animal models. These findings from this study demonstrated that gaze direction was able to be estimated using the proposed method.
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