Analysis Of Brain Functional Networks In The Mirror Neuron Modulation Paradigm

From the mirror neurons found up to now,researcher interesting change from the initial perception-exploration to the interdisciplinary study of mirror neuron activity behavior,from focusing on single neurons activities to explore the mechanism of the mirror neurons during individual observation and imitation of the movement and action,language understanding,empathy,social cognitive activities and so on by brain imaging technology.Therefore,the exploration of brain function network issue has attracted researchers' attention.As a complex system,a highly developed brain function differentiation and integration are the two major organizational principle of the brain,the brain's cognitive function execution always depends on the information transmission between multiple brain regions.Based on brain imaging technology,the human brain is regarded as a complex network.You can use the small world network analysis method for the qualitative and quantitative analysis.Our study based on the network analysis and power spectrum estimation method to study Electroencephalography(EEG)rhythmic signal.The network analysis method can be used to study the structural and functional connections between brain regions,and to provide us some insight on explaining the cognitive state of the brain neural mechanisms.The methods are based on modeling the brain function by transfer function of brain signals,and indices under small-world network framework,i.e.,clustering coefficient and shortest path length.At present,the neural mechanism of the mirror neuron system(MNS)under the high level cognitive task is not very clear.In this paper,two types of experimental paradigms are designed for the three social cognitive tasks,i.e.,motion observation,execution and intention understanding.Participants were instructed to provide button responses after gesture pictures observation,and to watch videos of the movement of chess,respectively.We explore patterns of the brain network connections by the responses of mirror neurons through different kinds of pictures and videos.Inaddition,the EEG data of children with autism was collected.And we intend to find the evidence of difference by comparing the response of autistic children with those of typically developed.In this paper,some experiments were conducted to understand the response of mirror neurons under different perspectives of participants.The results show that the? rhythm reflecting the function of mirror neuron system(MNS)is strongly inhibited in the left side perspective.It provides a theoretical support for future studies on the function of mirror neuron system(MNS).