| Presentation | 2006-03-15 Activity patterns of the isthmo-optic neurons and their relations with head movements in head-unrestrained quails Hiroshi OHNO, Osamu SETOYAMA, Hiroyuki UCHIYAMA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Retinopetal neurons in the isthmo-optic nucleus (ION) send their axons to the contralateral retina in birds. The centrifugal visual projection is thought to be involved in attentional modulation of retinal output. We recorded activity of neurons in the ION in awake, head-unrestrained Japanese quails using an implanted electrode assembly. Head movements were videotaped with a high-speed video camera (100fps). We found two distinct types of activity pattern: phasic and tonic. The majority of neurons in the ION discharge in a phasic manner. Phasic and tonic cells are also different one from another in relation to head movements. Phasic cells show phasic elevation of activity about 50ms before head movements to its receptive field direction, while tonic cells show tonic suppression during head movements. We will discuss the activity profiles of neurons in the ION in terms of their possible role in visually guided behaviors. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Retina / Centrifugal projection / Isthmo-optic nucleus / Selective attention |
| Paper # | NC2005-108 |
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| Committee | NC |
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| Conference Date | 2006/3/8(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Neurocomputing (NC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Activity patterns of the isthmo-optic neurons and their relations with head movements in head-unrestrained quails |
| Sub Title (in English) | |
| Keyword(1) | Retina |
| Keyword(2) | Centrifugal projection |
| Keyword(3) | Isthmo-optic nucleus |
| Keyword(4) | Selective attention |
| 1st Author's Name | Hiroshi OHNO |
| 1st Author's Affiliation | Faculty of Engineering, Kagoshima University() |
| 2nd Author's Name | Osamu SETOYAMA |
| 2nd Author's Affiliation | Faculty of Engineering, Kagoshima University |
| 3rd Author's Name | Hiroyuki UCHIYAMA |
| 3rd Author's Affiliation | Faculty of Engineering, Kagoshima University |
| Date | 2006-03-15 |
| Paper # | NC2005-108 |
| Volume (vol) | vol.105 |
| Number (no) | 657 |
| Page | pp.pp.- |
| #Pages | 5 |
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