| Presentation | 2005/10/13 Sensorimotor Integration and Visuomotor Transformation with Multiple Kinds of Motor Information in Human Holding Tasks Naoya KAKUTANI, Hiroshi FUKUDA, Naohiro FUKUMURA, Yoji UNO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Focusing on one of characteristics of grasped objects 'orientation' which is coded in the intraparietal area of primates' brain, we propose a neural network model which acquires the internal representation related to the orientation by integrating visual and multiple kinds of motor information and performs the visuomotor transformation based on the internal representation. In psychophysical experiments, information related to the object orientation was extracted from the data of positions and forces of thumb, index and middle fingers, when subjects held an equilateral triangle object set in five kinds of orientation. The resultant grasping force in the naturally chosen digit position was smaller than that in the constrained positions. In computer simulations, a five-layered sandglass network integrated visual and multiple kinds of motor information and acquired the internal representation of the orientation in its third layer after sufficient learning. Moreover, the network performed the visuomotor transformation based on the internal representation, solving a simple optimization problem with an objective function related to the resultant grasping force. We insist that this neural network model computationally explains the sensorimotor integration and visuomotor transformation mechanisms of the PIP-AIP-F5 circuit in the primates' brain. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | grasping / holding / internal representation / sensorimotor integration / visuomotor transformation / constrained optimization / problem / neural network |
| Paper # | HIP2005-70 |
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| Committee | HIP |
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| Conference Date | 2005/10/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Human Information Processing (HIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Sensorimotor Integration and Visuomotor Transformation with Multiple Kinds of Motor Information in Human Holding Tasks |
| Sub Title (in English) | |
| Keyword(1) | grasping |
| Keyword(2) | holding |
| Keyword(3) | internal representation |
| Keyword(4) | sensorimotor integration |
| Keyword(5) | visuomotor transformation |
| Keyword(6) | constrained optimization |
| Keyword(7) | problem |
| Keyword(8) | neural network |
| 1st Author's Name | Naoya KAKUTANI |
| 1st Author's Affiliation | Department of Information and Computer Sciences, Toyohashi University of Technology() |
| 2nd Author's Name | Hiroshi FUKUDA |
| 2nd Author's Affiliation | Department of Information and Computer Sciences, Toyohashi University of Technology |
| 3rd Author's Name | Naohiro FUKUMURA |
| 3rd Author's Affiliation | Department of Information and Computer Sciences, Toyohashi University of Technology |
| 4th Author's Name | Yoji UNO |
| 4th Author's Affiliation | Department of Information and Computer Sciences, Toyohashi University of Technology |
| Date | 2005/10/13 |
| Paper # | HIP2005-70 |
| Volume (vol) | vol.105 |
| Number (no) | 358 |
| Page | pp.pp.- |
| #Pages | 6 |
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