In this study, an improved second-order difference plot is proposed to analyze the variability of heart rate variability. Although variation physiological status cardiovascular system can be shown graphically by plot, descriptive ability existing indicators for insufficient. As a result, information contained in cannot extracted adequately. Addressing problem, temporal measure analysis presente...

Emotion, as a psychophysiological state, plays an important role in human communications and daily life. Emotion studies related to the physiological signals are recently the subject of many researches. In This study a hybrid feature based approach was proposed to examine affective states. To this effect, Electrocardiogram (ECG) signals of 47 students were recorded using pictorial emotion elici...

A classification system to detect congestive heart failure (CHF) patients from normal (N) patients is described. The classification procedure uses the k-nearest neighbor algorithm and uses features from the second-order difference plot (SODP) obtained from Holter monitor cardiac RR intervals. The classification system which employs a statistical procedure to obtain the final result gave a succe...