| Presentation | 2006-02-20 A Logarithmic Amplifier Model for Photocurrent Processed by PDE in Retinal Rods Masanori Kojima, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A logarithmic amplifier model of phototrunsduction in retinal rods is discussed. Phototrunsduction is the process by which the photoisomarization of rhodopsin is transformed into an electrical signal. The electrical signal is caused by the modulation of a photocurrent, flowing across the light-sensitive channels in the plasma membrane of rod. In this paper the process is expressed in equivalent circuits and the statistic photo responses of the process are simulated on the equivalent circuits. The simulation shows input dynamic range of 62 dB is compressed to output dynamic range of 19 dB and 50% of the total compression or more depends on the following process of the activated PDE changing the free cGMP. The logarithmic compression process is expressed in equivalent circuits of gain-controlled amplifiers and operational amplifiers. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Retina / Rod / Photocurrent / Logarithmic compression / Equivalent circuit |
| Paper # | ITS2005-55,IE2005-262 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2006/2/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Intelligent Transport Systems Technology (ITS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Logarithmic Amplifier Model for Photocurrent Processed by PDE in Retinal Rods |
| Sub Title (in English) | |
| Keyword(1) | Retina |
| Keyword(2) | Rod |
| Keyword(3) | Photocurrent |
| Keyword(4) | Logarithmic compression |
| Keyword(5) | Equivalent circuit |
| 1st Author's Name | Masanori Kojima |
| 1st Author's Affiliation | Faculty of Information Science, Osaka Institute of Technology() |
| Date | 2006-02-20 |
| Paper # | ITS2005-55,IE2005-262 |
| Volume (vol) | vol.105 |
| Number (no) | 608 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |