| Presentation | 2012-12-12 Numerical Analysis of Electrogastrograms in Elderly using Stochastic Resonance Model Yukimasa KASAMATSU, Fumiya KINOSHITA, Yasuyuki MATSUURA, Hiroki TAKADA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The electrical activity of the gastrointestine is measured using an electrogastrograph and presented as an electrogastrogram (EGG). Electrogastrography is a noninvasive procedure to evaluate gastrointestinal motility and autonomic nervous system activity. This study is aimed at obtaining a mathematical model of the EGG in the elderly and examining whether the mathematical model changes considerably with advancing age. It is known that the van der pol equation (VPE) is appropriate for obtaining a mathematical model of the EGG because the waveform of the electric potential in the Cajal cells is similar to the graphs of numerical solutions to the VPE. In our previous study, the mathematical model was improved by adding the VPE to a periodic function and random white noises that were analogous to the intestinal motility and other biosignals, respectively. In this study, the results of numerical analysis are evaluated by using distributions-the maximum Lyapunov exponent λ and translation errors Etrans, which are estimated in each embedding space. The degrees of complexity and smoothness of flow in an attractor, which is assumed to generate the time series, can be measured by λ and Etrans, respectively. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Electrogastrogram (EGG) / stochastic resonance / numerical analysis / van der pol equation (VPE) / nonlinear analysis |
| Paper # | MBE2012-62 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 2012/12/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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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 Electrogastrograms in Elderly using Stochastic Resonance Model |
| Sub Title (in English) | |
| Keyword(1) | Electrogastrogram (EGG) |
| Keyword(2) | stochastic resonance |
| Keyword(3) | numerical analysis |
| Keyword(4) | van der pol equation (VPE) |
| Keyword(5) | nonlinear analysis |
| 1st Author's Name | Yukimasa KASAMATSU |
| 1st Author's Affiliation | Graduate of Engineering University of Fukui() |
| 2nd Author's Name | Fumiya KINOSHITA |
| 2nd Author's Affiliation | Faculty of Engineering University of Fukui |
| 3rd Author's Name | Yasuyuki MATSUURA |
| 3rd Author's Affiliation | Headquarters for Innovative Society-Academia Cooperation University of Fukui |
| 4th Author's Name | Hiroki TAKADA |
| 4th Author's Affiliation | Faculty of Engineering University of Fukui |
| Date | 2012-12-12 |
| Paper # | MBE2012-62 |
| Volume (vol) | vol.112 |
| Number (no) | 344 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |