Effect Of Aerobic Exercise On Prefrontal EEG Asymmetry

With the development of society,the pace of life is accelerating,people's pressure is increasing,and the negative emotions of people are increasing.Serious negative emotions can lead to mental illness,so research on emotion recognition and emotion regulation becomes more and more meaningful.Exercise has an impact on human emotions.There are many studies that have analyzed this problem.Some studies have shown that different exercise patterns or different intensity exercises have different effects on emotions.For example,repeatable moderate-intensity aerobic exercise has a significant regulatory effect on negative emotions.In the way of emotion recognition,the individual's emotions are usually evaluated through subjective feelings,and there is no index evaluation of objective physiological changes.Therefore,it is more meaningful to identify emotional changes through electroencephalogram(EEG).This paper is based on the study of prefrontal EEG asymmetry.In this study,EEG signals are collected through appropriate experimental design.The focus is on the impact of moderate-intensity cycling on prefrontal EEG asymmetry.Firstly,41 college students without sports habits are selected in this study.Based on these subjects,an experiment is designed.The main content of the experiment is to stimulate the emotions of the subjects with pictures before and after cycling,in order to recognize the emotions of the subjects and analyze the effects of exercise on the prefrontal EEG asymmetry.Secondly,after analyzing the collected EEG data,the EEG data of 33 subjects are valid.And the original EEG signals of 33 subjects are pre-processing,mainly using the independent component analysis(ICA)to remove the ocular artifact.Thirdly,the EEG data of all subjects are pre-processing within three seconds after each positive and negative image stimulation is divided into one trail.And sample entropy(SampEn)and frontal asymmetry index(FAI)features in the alpha band of four channels of F3,F4,F7 and F8 of all trails in the prefrontal cortex are extracted,and classified by support vector machine(SVM).The purpose of classification is to analyze the recognition effect of FAI,and then compare the recognition effects of SVM and KNN.Finally,in order to study the effect of aerobic exercise on prefrontal EEG asymmetry,the two groups of FAI are extracted before and after cycling in different emotional states for each participant,and the mean values of two groups of the change of FAI((35)FAI)are calculated under different emotions.The average values of two groups of(35)FAI under the same emotions before and after cycling exercise are compared.In addition,the mean values of FAI of the two groups before and after cycling exercise under all negative emotions are statistically analyzed.From the classification results,the recognition rates of positive and negative emotions using SVM with SampEn and FAI are 53.27% and 74.34%,respectively.The recognition rates of the two features using KNN are 52% and 70.5%,respectively.Compared with the recognition rate of SampEn and FAI,it shows that FAI has better effect on emotion recognition of the experimental data,and it also proves that using FAI can recognize emotion effectively in SVM.In the analysis of(35)FAI for each participant before and after moderate-intensity cycling.It is shown that for most subjects,exercise enhanced the left lateralization of prefrontal lobe in positive and negative emotional states,especially in negative emotions.In addition,statistical analysis shows that there are significant differences in FAI before and after moderate-intensity cycling.In summary,moderate-intensity cycling can significantly enhance the left lateralization prefrontal lobe of subjects under negative emotions,indicating that moderate-intensity cycling can promote the recovery of negative emotions.