<p>The ultimate aim of this study is to make detrended fluctuation analysis (DFA) useful for everyone. It introduces a practical method for making a device that can check cyclic rhythm in nature, such as the heartbeat. This book presents empirical evidence revealed by a modified DFA (mDFA). A heartbeat-checking algorithm, DFA, was made by Peng et al. in the mid-1990s. However, the technique has not been incorporated in a device for practical use. With a view to creating a device DFA, mDFA was made by modifying Peng's DFA--and a former graduate student (Katsunori Tanaka) created the program under supervision of the author. To verify mDFA, hundreds of cyclic phenomena were studied and recorded. Crustacean hearts have more than a 100-year history in biology and physiology. They are advantageous for conducting experiments such as isolated-heart electrophysiology. Crustacean hearts are thus good models for human hearts. DFA techniques are essentially just tools quantifying the state of the heartbeat and its control. This book does not describe details about DFA, but it does describe how mDFA works and it is useful for analyzing fluctuation of various cyclic behaviors such as heart movements. In conclusion, mDFA is a useful tool for studying the heart function interms of biomedical technology, engineering and animal physiology. --</p>

Modified Detrended Fluctuation Analysis (Mdfa)

Science & Math

Kahlen, Franz-Josef

Yazawa, Toru

Technology

American Society of Mechanical Engineers

This book described empirical results of biological use of an analytical technique, DFA (Detrended Fluctuation Analysis). But this book did not describe what DFA is. Instead, using DFA, fluctuation of heartbeats was investigated in this book. Because human hearts are inappropriate specimens for conducting physiological experiments, crustacean hearts were chosen at first as a model to conduct various experiments such as isolated-heart experiments. Later, this book described human heart as well. First, we tried to describe how human hearts resemble with invertebrate hearts. (Those who do not need biology can skip biology sections.) Then, various results obtained from analysis both on model animals and humans were presented. By presenting the empirical results, the authors suggested how DFA is practically useful in the field of bio-medical technology.

Modified Detrended Fluctuation Analysis Mdfa: An Empirical Study on Heartbeat

Engineering & Transportation

Engineering

Momentum Pr

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