POSSIBILITY OF MENTAL HEALTH SELF-CHECKS USING DIVERGENCE PROPERTIES OF PULSE WAVES

Mayumi Oyama-Higa, Tiejun Miao

2008

Abstract

We conducted a nonlinear analysis of fingertip pulse waves and found that the Lyapunov exponent having the “divergence” property of attractor trajectory was an effective index for estimating human mental health. We showed that this method is effective for an early detection of dementia and depression, as well as in the detection of changes in mental status. In addition, based on these results obtained from time series analysis of the recorded pulse waves, we developed an application device allowing easily installed and convenient measurement for daily check and monitoring mental/physical status. It was an easy-to-use and cost-less device installed in a PC mouse. Also, we studied a representation method of constellation graphs to disclose the fluctuation details of the Lyapunov exponents. In the representation, changes in mental status were assessed and graphically visible by using of the fluctuation factor of the Lyapunov exponents.

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Paper Citation


in Harvard Style

Oyama-Higa M. and Miao T. (2008). POSSIBILITY OF MENTAL HEALTH SELF-CHECKS USING DIVERGENCE PROPERTIES OF PULSE WAVES . In Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008) ISBN 978-989-8111-18-0, pages 361-370. DOI: 10.5220/0001060503610370


in Bibtex Style

@conference{biosignals08,
author={Mayumi Oyama-Higa and Tiejun Miao},
title={POSSIBILITY OF MENTAL HEALTH SELF-CHECKS USING DIVERGENCE PROPERTIES OF PULSE WAVES},
booktitle={Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008)},
year={2008},
pages={361-370},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001060503610370},
isbn={978-989-8111-18-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008)
TI - POSSIBILITY OF MENTAL HEALTH SELF-CHECKS USING DIVERGENCE PROPERTIES OF PULSE WAVES
SN - 978-989-8111-18-0
AU - Oyama-Higa M.
AU - Miao T.
PY - 2008
SP - 361
EP - 370
DO - 10.5220/0001060503610370