| Presentation | 2005/3/21 Relationship between finger-pinch force and motor activation : Comparison between NIRS with fMRI Isao NAMBU, Rieko OSU, Eiichi NAITO, Mitsuo KAWATO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Previous studies using fMRI or PET in humans have shown that neuronal activity of the primary motor cortex (Ml) well reflects level of generated force by hand. In the present study, we investigated relationship between finger-pinch force and brain activity (Oxy-Hb) by utilizing near infrared spectroscopy (NIRS). We measured the motor cortical activity for 15 sec while four right-handed healthy subjects repetitively generated a target force {0.5, 1.5, 2.5 or 3.0} kgf with right thumb and index finger at 1 Hz. The activity in the contralateral primary motor cortex (Ml) was positively correlated with the level of force. We also measured BOLD signal with functional magnetic resonance imaging (fMRI) while the identical subjects performed the identical tasks. The Ml activity was also positively correlated with the level of force. The NIRS signal was strongly correlated with BOLD signal. These results suggest that NIRS can be a useful and convenient technique to measure human motor cortical activity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | near infrared spectroscopy (NIRS) / functional magnetic resonance imaging (fMRI) / finger-pinch force |
| Paper # | NC2004-141 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2005/3/21(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) | Relationship between finger-pinch force and motor activation : Comparison between NIRS with fMRI |
| Sub Title (in English) | |
| Keyword(1) | near infrared spectroscopy (NIRS) |
| Keyword(2) | functional magnetic resonance imaging (fMRI) |
| Keyword(3) | finger-pinch force |
| 1st Author's Name | Isao NAMBU |
| 1st Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology:ATR, Computational Neuroscience Laboratories() |
| 2nd Author's Name | Rieko OSU |
| 2nd Author's Affiliation | ATR, Computational Neuroscience Laboratories |
| 3rd Author's Name | Eiichi NAITO |
| 3rd Author's Affiliation | Graduate School of Human and Environmental Studies, Kyoto University:ATR, Computational Neuroscience Laboratories |
| 4th Author's Name | Mitsuo KAWATO |
| 4th Author's Affiliation | ATR, Computational Neuroscience Laboratories:Graduate School of Information Science, Nara Institute of Science and Technology |
| Date | 2005/3/21 |
| Paper # | NC2004-141 |
| Volume (vol) | vol.104 |
| Number (no) | 758 |
| Page | pp.pp.- |
| #Pages | 6 |
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