Examination of intracortical stimulation methods for visual prosthesis based on cortical columnar structures.
| Project/Area Number |
24500580
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Rehabilitation science/Welfare engineering
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| Research Institution | Kyoto Sangyo University (2013-2014)
Osaka University (2012) |
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Principal Investigator |
TANAKA Hiroki 京都産業大学, コンピュータ理工学部, 准教授 (40335386)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 人工視覚 / 視覚野 / 閃光 / 電気刺激 / 微小電気刺激 / 多点電極 / 神経回路 / 皮質微小電気刺激 |
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| Outline of Final Research Achievements |
Delivery of electrical pulses to visual cortices produces a sensation of small spot of light, indicating a possibility of this technique to be used as a visual prosthesis that assists for blind people. To realize this, it is important to establish stimulation protocols appropriate for visual prosthesis. Therefore, I examined cortical activities in response to intracortical stimulations of various stimulus frequencies and segmented pulse trains interrupted with pause intervals. My results indicate higher frequencies are desirable for evoking spatially localized and temporally constant population activities. Such activities can be observed, even when duty ratio are lowered up to 60%. For realization of visual prosthesis, it is also important to understand the physiological basis of visual prosthesis. We therefore investigated how neuronal population in the visual cortex cooperates to work and revealed the details of spatial range or laminar dependence of such cooperative activities.
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Report
(4 results)
Research Products
(10 results)
