2002 Fiscal Year Final Research Report Summary
Analysis of spatio-temporal light responses of retinal cells using a new multi-electrode array on integrated circuit
| Project/Area Number |
13559003
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
広領域
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
USUI Shiro Toyohashi University of Technology, Engineering, Professor, 工学部, 教授 (40023337)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIDA Makoto Toyohashi University of Technology, Engineering, Professor, 工学部, 教授 (30126924)
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| Project Period (FY) |
2001 – 2002
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| Keywords | retina / multi-electrode array / neuron / modeling simulation / neural signal recording / synapse / bipolar cell / ganglion cell |
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| Research Abstract |
The purpose of our research is the elucidation of neural circuit mechanisms concerning with spatio-temporal visual processing in retina by the approach of both electrophysiological experiment using multi-electrode and modeling simulation.
We developed the new multi-microelectrode array which is suitable to record light responses from retinal ganglion cell. The array was developed using selective vapor-liquid-sold (VLS) growth method and integrated circuit (IC) process on Si(111) substrate. The length and diameter of probes on the array was controlled in a few micrometers. We also established the electrophysiological recording system using the array based on the ordinary system.
In the modeling approach, we developed mathematical model of synaptic mechanisms between bipolar cell and ganglion cell. The model described intracellular transmission mechanisms in synapse of bipolar cell based on their physiological evidence, and well reproduced the I-V relationship and the capacitance jump responses to pulses with various durations. The model would allow us to construct network model from photoreceptor to ganglion cell, and to analyze neural mechanisms in direct pathway of visual information in retina.
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Research Products
(12 results)
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[Publications] Kawano, T., Kato, Y., Futagawa, M., Tani, R., Takao, H., Sawada, K., Ishida, M: "Fabrication and Properties of Ultra Small Si Wire Arrays by Vapor-Liquid-Solid Growth with Circuits"Sensors and Actuators A. 97-98. 709-715 (2002)
Description
「研究成果報告書概要(和文)」より
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[Publications] Kato, Y., Kawano, T., Ito, Y., Ashiki, M., Takao, H., Sawada, K., Ishida, M: "Signal Conditioning CMOS Circuit Integrated on Si (111) for Neural Activity Image Recording"IEEJ The 19th Sensor Symposium. 421-424 (2002)
Description
「研究成果報告書概要(和文)」より
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[Publications] Kawano,T., Kato,Y., Futagawa,M., Tani,R., Takao,H., Sawada,K., and Ishida,M.: "Fabrication and Properties of Ultra Small Si Wire Arrays by Vapor-Liquid-Solid Growth with Circuits"Sensors and Actuators A. vol.97-98. 709-715 (2002)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Kato,Y., Kawano,T., Ito,Y., Ashiki,M., Takao,H., Sawada,K., and Ishida,M.: "Signal Conditioning CMOS Circuit Integrated on Si (111) for Neural Activity Image Recording"IEEJ The 19th Sensor Symposium. 421-424 (2002)
Description
「研究成果報告書概要(欧文)」より
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