| Presentation | 2016-12-13 Frequency singularity in nonlinear heart rate dynamics Junichiro Hayano, Emi Yuda, Hiroki Ogasawara, Yutaka Yoshida, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In healthy humans, 24-hr fluctuation of heart rate shows down-sloping linear log-log spectrum with a slope of -1, indicating that human heart beats have 1/f fluctuation property. Although heart beats during atrial fibrillation show horizontal log-log spectrum indicating white noise in high frequency band >0.005± 0.002 Hz, in frequency band below this frequency they also show down-sloping linear log-log spectrum with a slope close to -1. Even in healthy people, particularly young subjects, log-log spectrum has an inflection point and bends to upper direction above and below this point. This bending recuses with aging as a butterfly spreads wings. These observations indicate the presence of singularities in heart beat fluctuation at periods of around 200 sec and 30 min. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | heart rate variability / log-log spectrum / 1/f fluctuation / singularity |
| Paper # | NLP2016-92 |
| Date of Issue | 2016-12-05 (NLP) |
| Conference Information | |
| Committee | NLP |
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| Conference Date | 2016/12/12(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Chukyo Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hisato Fujisaka(Hiroshima City Univ.) |
| Vice Chair | Masaharu Adachi(Tokyo Denki Univ.) |
| Secretary | Masaharu Adachi(Konan Univ.) |
| Assistant | Hiroyuki Asahara(Okayama Univ. of Science) / Toshihiro Tachibana(Shonan Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Nonlinear Problems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Frequency singularity in nonlinear heart rate dynamics |
| Sub Title (in English) | |
| Keyword(1) | heart rate variability |
| Keyword(2) | log-log spectrum |
| Keyword(3) | 1/f fluctuation |
| Keyword(4) | singularity |
| 1st Author's Name | Junichiro Hayano |
| 1st Author's Affiliation | Nagoya City University(Nagoya City Univ.) |
| 2nd Author's Name | Emi Yuda |
| 2nd Author's Affiliation | Nagoya City University(Nagoya City Univ.) |
| 3rd Author's Name | Hiroki Ogasawara |
| 3rd Author's Affiliation | Nagoya City University(Nagoya City Univ.) |
| 4th Author's Name | Yutaka Yoshida |
| 4th Author's Affiliation | Nagoya City University(Nagoya City Univ.) |
| Date | 2016-12-13 |
| Paper # | NLP2016-92 |
| Volume (vol) | vol.116 |
| Number (no) | NLP-353 |
| Page | pp.pp.45-48(NLP), |
| #Pages | 4 |
| Date of Issue | 2016-12-05 (NLP) |