Real-time Continuous Assessment Method for Mental and Physiological Condition using Heart Rate Variability

Yoshida Yutaka, Yokoyama Kiyoko, Ishii Naohiro

doi:10.1541/ieejeiss.126.1441

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Other Title

心拍変動時系列を用いた生体状態の実時間連続判定手法
シンパクヘンドウジケイレツオモチイタセイタイジョウタイノジツジカンレンゾクハンテイシュホウ

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Description

It is necessary to monitor the daily health condition for preventing stress syndrome. In this study, it was proposed the method assessing the mental and physiological condition, such as the work stress or the relaxation, using heart rate variability at real time and continuously.<br>The instantanuous heart rate (HR), and the ratio of the number of extreme points (NEP) and the number of heart beats were calculated for assessing mental and physiological condition. In this method, 20 beats heart rate were used to calculate these indexes. These were calculated in one beat interval.<br>Three conditions, which are sitting rest, performing mental arithmetic and watching relaxation movie, were assessed using our proposed algorithm. The assessment accuracies were 71.9% and 55.8%, when performing mental arithmetic and watching relaxation movie respectively.<br>In this method, the mental and physiological condition was assessed using only 20 regressive heart beats, so this method is considered as the real time assessment method.

Journal

IEEJ Transactions on Electronics, Information and Systems

IEEJ Transactions on Electronics, Information and Systems 126 (12), 1441-1446, 2006

The Institute of Electrical Engineers of Japan

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