Research On The Effects Of Music Types On Learning Memory Based On EEG Analysis

Music plays an important role in people's daily life,and the study on the influence of music on learning cognitive activity acquires importance by more and more scholars.Some studies show that background music make people relaxing,help people focus attention,promote creative thinking,and improve the efficiency of work learning.Some other views consider that music is a kind of independent sound stimulation,and would take a certain psychological cognitive resources.Due to the limitations of psychological cognitive resources,listening to music may cause interference to the current work learning tasks.In this thesis,the influences of different kinds of music stimulates on working memory are studied by EEG experiments.The brain function networks are built and analyzed by the complex network theory based on graph theory,and the characteristics of brain function network are studied.The event related potential(ERP)component on learning memory under different music stimulates are discussed.Firstly,the modified Sternberg learning memory task experiment is designed and completed,and EEG signals of working memory task on different music stimulations are collected.After the pre-processing of the collected EEG signals,the brain function network is constructed and behavioral data are analyzed.he cross correlation coefficient among different leads are calculated,The cross correlation coefficient matrix is transformed into binary matrix by selecting the appropriate threshold,and the connection diagram of brain function network is constructed according to the constructed binary matrix and the lead location map.Then,the function parameters of the brain function network with different music stimulations are analyzed,and the statistical analysis are carried out.Moreover,the brain region responsible to working memory tasks are gained according to the correlation coefficient of topological properties of brain function network,and the ERP components and brain processing mechanism of different music stimulations are studied by selecting representative electrode.The results show that there are significant differences in the close degree of brain functional connectivity under different music states,and on the frontal area and occipital region,the brain complexity and the wave amplitude of P300 component change obviously.It is proved that different music stimulations have significant impacts on the learning task.According to the attentive capacity theory,the learning efficiency is the highest under the state of the absence of music,followed by classical music state.The results will play important roles in revealing the mystery of the brain music effect.