| Presentation | 2019-12-06 Numerical analysis of coil-induced electric field in micro magnetic stimulation and its evaluation on the basis of evoked neural responses Shunsuke Sugai, Jun Nishikawa, Takashi Tateno, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Magnetic stimulation has widely attracted attention as a treatment for neurological diseases. In general, the size reduction of magnetic stimulation devices is desirable because the size is relatively large, compared with electrode stimulation devices. In transcranial magnetic stimulation, the exact brain regions and their triggering mechanisms of neural activity are largely unknown because of the large size of the devices. This study aims to develop a new implantable microcoil device, which stimulates the brain locally on the order of several tens of microscales, as well as clarifying the mechanisms of neural activity induction. First, to know the effects of the coil shape on the evoked neural responses, the induced electric field in semicircular coils with different diameters was numerically calculated using the finite element method. Next, from the obtained numerical results, we compared the spatial regions of the neural tissue above the minimum threshold that can induce neural activity in different coil shapes and examined the optimal coil shape for the effective stimulation to the neural tissue. Finally, we measured the brain areas where evoked responses through autofluorescent flavoprotein imaging and evaluated the validity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Autofluorescence imaging / Brain stimulation / Coil design / Finite element method / Micro-magnetic stimulation |
| Paper # | MBE2019-51,NC2019-42 |
| Date of Issue | 2019-11-29 (MBE, NC) |
| Conference Information | |
| Committee | NC / MBE |
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| Conference Date | 2019/12/6(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Toyohashi Tech |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hayaru Shouno(UEC) / Taishin Nomura(Osaka Univ.) |
| Vice Chair | Kazuyuki Samejima(Tamagawa Univ) / Takashi Watanabe(Tohoku Univ.) |
| Secretary | Kazuyuki Samejima(NAIST) / Takashi Watanabe(NTT) |
| Assistant | Takashi Shinozaki(NICT) / Ken Takiyama(TUAT) / Yasuyuki Suzuki(Osaka Univ.) / Akihiro Karashima(Tohoku Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Neurocomputing / Technical Committee on ME and Bio Cybernetics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Numerical analysis of coil-induced electric field in micro magnetic stimulation and its evaluation on the basis of evoked neural responses |
| Sub Title (in English) | |
| Keyword(1) | Autofluorescence imaging |
| Keyword(2) | Brain stimulation |
| Keyword(3) | Coil design |
| Keyword(4) | Finite element method |
| Keyword(5) | Micro-magnetic stimulation |
| 1st Author's Name | Shunsuke Sugai |
| 1st Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 2nd Author's Name | Jun Nishikawa |
| 2nd Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 3rd Author's Name | Takashi Tateno |
| 3rd Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| Date | 2019-12-06 |
| Paper # | MBE2019-51,NC2019-42 |
| Volume (vol) | vol.119 |
| Number (no) | MBE-327,NC-328 |
| Page | pp.pp.37-42(MBE), pp.37-42(NC), |
| #Pages | 6 |
| Date of Issue | 2019-11-29 (MBE, NC) |