Characterization of multivariate cardiovascular dynamics during head-up tilting based on Kullback-Leibler divergence

Mitsuyuki Nakao, Masakatsu Sawada, Yukio Matsushita, Norihiro Katayama, Mitsuaki Yamamoto, Masanori Munakata

研究成果: Conference article査読

4 被引用数 (Scopus)

抄録

In this paper, multivariate cardiovascular dynamics during head-up tilting is investigated as an augmenting process of sympathetic activities. Characteristically in spectral profiles, a respiration-induced rhythm in each variables is reduced, and alternatively the Mayer wave components in blood pressure and heart rate signals become distinct, as a tilting angle increases. These spectral features are shown to be originated from closed-loop impulse responses which show the longer lasting response from HR to HR and the delayed response from HR to BP in contrast with those from BP to HR and from BP to BP which exhibit no systematic changes. The newly introduced Kullback-Leibler divergence consistently differentiates tilting-angle-dependent multivariate cardiovascular dynamics. The results here suggest that the Kullback-Leibler divergence could provide synthetic characterization of the autonomic regulations.

本文言語English
ページ(範囲)2180-2183
ページ数4
ジャーナルAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
5
出版ステータスPublished - 1997 12 1
イベントProceedings of the 1997 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Chicago, IL, USA
継続期間: 1997 10 301997 11 2

ASJC Scopus subject areas

  • 信号処理
  • 生体医工学
  • コンピュータ ビジョンおよびパターン認識
  • 健康情報学

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