| Presentation | 2012-06-28 The relationship between local structure of orientation map and orientation selectivity of neurons in monkey V1 examined by 2-photon calcium imaging techniques Koji IKEZOE, Yoshiya MORI, Kazuo KITAMURA, Hiroshi TAMURA, Ichiro FUJITA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Neurons in primary visual cortex of monkey are orientation selective with various degrees of strength. They are arranged according to their preferred orientation in tangential dimension to the cortical surface and form orientation map. Here, we examined the relationship between the strength of orientation selectivity and location of the neuron in terms of local heterogeneity of preferred orientation in the map. We simultaneously monitored activities of individual neurons in response to gratings with various orientations by using calcium imaging techniques with a 2-photon microscope. Neurons in a heterogeneous region for preferred orientation showed weak or no orientation selectivity, whereas neurons in a homogenous region showed various degrees of orientation selectivity. Thus, orientation tuning strength of neurons is related to their position in the orientation map. This relationship should be a clue to understanding neural mechanisms for orientation selectivity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | primate / functional architecture / 2-photon laser scanning microscope / primary visual cortex / in vivo imaging |
| Paper # | NC2012-11 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2012/6/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| 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) | The relationship between local structure of orientation map and orientation selectivity of neurons in monkey V1 examined by 2-photon calcium imaging techniques |
| Sub Title (in English) | |
| Keyword(1) | primate |
| Keyword(2) | functional architecture |
| Keyword(3) | 2-photon laser scanning microscope |
| Keyword(4) | primary visual cortex |
| Keyword(5) | in vivo imaging |
| 1st Author's Name | Koji IKEZOE |
| 1st Author's Affiliation | Graduate School of Frontier Biosciences, Osaka University() |
| 2nd Author's Name | Yoshiya MORI |
| 2nd Author's Affiliation | Graduate School of Frontier Biosciences, Osaka University |
| 3rd Author's Name | Kazuo KITAMURA |
| 3rd Author's Affiliation | Graduate School of Medicine, The University of Tokyo |
| 4th Author's Name | Hiroshi TAMURA |
| 4th Author's Affiliation | Graduate School of Frontier Biosciences, Osaka University |
| 5th Author's Name | Ichiro FUJITA |
| 5th Author's Affiliation | Graduate School of Frontier Biosciences, Osaka University |
| Date | 2012-06-28 |
| Paper # | NC2012-11 |
| Volume (vol) | vol.112 |
| Number (no) | 108 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |