2013 Fiscal Year Final Research Report
Development of Paste-free Brain Wave Electrode using Nanocarbon
| Project/Area Number |
23651151
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Microdevices/Nanodevices
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| Research Institution | Fukui National College of Technology |
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Principal Investigator |
KAWAMOTO Akira 福井工業高等専門学校, その他部局等, 教授 (90110189)
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| Research Collaborator |
北井 隆平 福井大学, 脳神経脊髄外科, 准教授
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| Project Period (FY) |
2011 – 2013
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| Keywords | 脳波電極 / アーチファクト / X線CT / 銀皿電極 / 多層カーボンナノチューブ / ペーストフリー / 誘発脳波 / ヤモリテープ |
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| Research Abstract |
Conventional brain wave electrodes are made from Ag/AgCl. Ag/AgCl disk electrodes block X-ray and cause white lines to radiate out from the electrode in an X-ray computed tomography (CT) image. We therefore developed new brain wave electrodes using multi-wall carbon nanotube-dispersed PMMA thin film that can detect an Electroencephalogram (EEG) without radiological shadow of the electrode. It is found that the detection sensitivity of the multi-wall carbon nanotube-dispersed electrode was greater than that of Ag/AgCl disk electrodes. Thus, concurrent use of X-ray CT, MRI and brain wave electrode is possible.
Volume resistivity of MWNT-dispersed PMMA thin film is higher than that of Ag/AgCl disk electrode, but brain wave was obtained clearly using its thin film electrode. This mechanism was elucidated. On the other hand, we developed new paste-free brain wave electrodes using multi-wall carbon nanotube-dispersed PMMA thin film.
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