Data Acquisition Of Physiological Signals And The Application In Emotion Recognition

Under negative emotions for a long-time can lead to individual emotional system disorders,which can also affect the adaptability to the environment and daily learning,however this kind of individual emotions are difficult to be noticed by the outside world.Multiple physiological signals’ emotion recognition can monitor the changes of the physiological indexes of the human body by analyzing the multiple physiological signals characteristic parameters or the combination of them,showing the real emotional state of the individual.Psychological intervention is to deal with the problem through the theory and method of Psychology,in order to let human’s imbalanced cognition and emotional state tend to become stable.This article uses chaos theory to recognize emotions for individuals’ multiple physiological signals,based on verifying the feasibility of this method,through psychological intervention to apply psychological counseling for individuals who have results as negative emotions.Firstly,this paper uses the physiological signal instrument to extract chaos characteristics(Maximum Lyapunov index,Information entropy,Approximate entropy,Box dimension and Complexity)of multiple physiological signals(ECG,RSP,SC)under four different emotions(sadness,pleasure,anger and joy)from two volunteers(one male and one female).Secondly,the chaos characteristics are extracted to form the chaotic feature matrix,and to make recognition and classification of four kinds of emotion combining with C5.0 decision tree classifier.The results show that the algorithm of C5.0 decision tree’s recognition rates are 91% and 93% respectively in emotion recognition based on chaotic theory,and the individual gender difference has little effect.On the basis of that,by means of cognitive-behavioral therapy,it tracks an individual identified with negative emotions and finds out the hot spots that bring individual negative emotions by the use of physiological signal equipment.Next,it employs both the PR-II biofeedback relaxation-training instrument and psychological intervention to provide psychological counseling for individuals.Results show that recognition rate of positive emotion from subjects rises from 60% to 100%,it demonstrates that the psychological intervention based on emotion recognition has better effect of emotional intervention.