| Presentation | 2007-07-24 Information analysis of Monkey AIP neurons during hand manipulation task Takashi SHIMIZU, Fumihiko ISHIDA, Akira MURATA, Yutaka SAKAGUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We analyzed spike activities of the monkey anterior intraparietal area (AIP) to reveal how the brain represents information related to hand manipulation. During the hand manipulation task, many AIP neurons respond selectivity to the 3D shape, orientation and size of the objects to be grasped and/or the hand configuration to grasp them. Here, we calculated mutual information (MI) between spike frequency of single neurons and various clusters of 6 objects, and examined how MI changed dependent on different task periods (i.e., fixation, reaching and grasping) for each clustering. MI took peak values in different periods dependent on clustering types: For some neurons, MI for rough clustering had the peaks in the fixation period while MI for fine clustering had the peaks in the reaching or grasping period. This suggests that AIP neurons many represent information relevant to the hand manipulation in a hierarchical manner, that is, different grains of information in different periods. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | information analysis / anterior intraparietal area (AIP) / hand manipulation |
| Paper # | NC2007-25 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2007/7/17(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| 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) | Information analysis of Monkey AIP neurons during hand manipulation task |
| Sub Title (in English) | |
| Keyword(1) | information analysis |
| Keyword(2) | anterior intraparietal area (AIP) |
| Keyword(3) | hand manipulation |
| 1st Author's Name | Takashi SHIMIZU |
| 1st Author's Affiliation | Graduate School of Information Systems, University of Electro-Communications() |
| 2nd Author's Name | Fumihiko ISHIDA |
| 2nd Author's Affiliation | Graduate School of Information Systems, University of Electro-Communications |
| 3rd Author's Name | Akira MURATA |
| 3rd Author's Affiliation | School of Medicine, Kinki University |
| 4th Author's Name | Yutaka SAKAGUCHI |
| 4th Author's Affiliation | Graduate School of Information Systems, University of Electro-Communications |
| Date | 2007-07-24 |
| Paper # | NC2007-25 |
| Volume (vol) | vol.107 |
| Number (no) | 157 |
| Page | pp.pp.- |
| #Pages | 6 |
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