| Presentation | 2004/5/21 An imaging study on human action selection for hierarchical rules Hidefumi FUNAKOSHI, Wako YOSHIDA, Shin ISHII, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to adapt to a dynamic environment, appropriate behavioral switching is necessary. In most real world problems, there are numerous possible actions, and it is too hard to select an optimal one by evaluating all of them. Even in such a situation, humans are able to select an action efficiently by seeking only over a subspace of the whole action space. In this study, we design a Multi Feature Sorting Task in which the behavioral rules have a hierarchical structure, and conduct an fMRI experiment using the task. This task consists of two kinds of rule switches; one is a higher order switch to search for a rule across different subspaces, and the other is a lower order switch to change a rule within the same subspace. The results in our imaging study show that left inferior frontal gyrus is related to the higher order switch, and right fronto-polar and right dorsolateral prefrontal cortex are significantly activated with the lower order one. We also suggest a functional model of prefrontal cortex which realizes the hierarchical rule switching mechanism. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | meta-rule / action selection / rule switch / fMRI / prefrontal cortex |
| Paper # | NC2004-9 |
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| Committee | NC |
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| Conference Date | 2004/5/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| 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) | An imaging study on human action selection for hierarchical rules |
| Sub Title (in English) | |
| Keyword(1) | meta-rule |
| Keyword(2) | action selection |
| Keyword(3) | rule switch |
| Keyword(4) | fMRI |
| Keyword(5) | prefrontal cortex |
| 1st Author's Name | Hidefumi FUNAKOSHI |
| 1st Author's Affiliation | Nara Institute of Science and Technology() |
| 2nd Author's Name | Wako YOSHIDA |
| 2nd Author's Affiliation | Nara Institute of Science and Technology |
| 3rd Author's Name | Shin ISHII |
| 3rd Author's Affiliation | Nara Institute of Science and Technology |
| Date | 2004/5/21 |
| Paper # | NC2004-9 |
| Volume (vol) | vol.104 |
| Number (no) | 99 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |