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Hangsik Shin,Chungkeun Lee,Jinkwon Kim,Myoungho Lee IEEE 2006 Conference proceedings Vol.2006 No.8
<P>In this paper, we propose a modified arrhythmia diagnosis and therapy control algorithm based on VENTAK PRIZM 2trade algorithm of the Guidant corp. Existing arrhythmia detection and therapy control algorithms control arrhythmia through two steps. First step is event detection using peak-to-peak interval detection, and the second step is duration detection. We modify these stages to improve diagnosis time delay and treatment efficiency</P>
Robust Sleep Quality Quantification Method for a Personal Handheld Device
Shin, Hangsik,Choi, Byunghun,Kim, Doyoon,Cho, Jaegeol Mary Ann Liebert 2014 TELEMEDICINE JOURNAL AND E HEALTH Vol.20 No.6
<P>The purpose of this study was to develop and validate a novel method for sleep quality quantification using personal handheld devices.</P>
심박변이율 주파수 분석을 통한 실내온도에 따른 건강한 성인의 자율신경계 활동 평가
신항식(Hangsik Shin) 대한전기학회 2015 전기학회논문지 Vol.64 No.8
The purpose of this paper is to investigate the autonomic nervous system activity in various ambient temperatures. To evaluate autonomic function, we use the frequency domain analysis of heart rate variability such as FFT(fast fourier transformation), AR(Auto-Regressive) model and Lomb-Scargle peridogram. HRV(heart rate variability) is calculated by using ECG recorded from 3 different temperature room which temperature is controlled in 18℃(low), 25℃(mid) and 38℃(high), respectively. Totally 22 subjects were participated in the experiment. In the results, the most significant autonomic changes caused by temperature load were found in the HF(high frequency) component of FFT and AR model. And the HF power is decreased by increasing temperature. Significance level was increased by increasing the difference of temperatures.