چكيده به لاتين
Abstract:
There is evidence that shows people specializing in music, because of continuous musical training, has structural and functional features of the brain that may not be found in other people. Because of the human brain plasticity property, it can dynamically adapt itself to a changing environment, numerous studies have shown that learning to play an instrument in several years can lead to structural and functional differences in the brain of musicians.
In this research, we investigate the effect of music training in functional brain networks through EEG signal recording of musicins in response to music. Our hypothesize is that musician functional brain networks because of long- term music training, have Optimized small-world properties in compared whit others.
In order to achieve the purpose of research, EEG brain signals of training people who have been long-time music has been compared to other people. We then filtering the recording signals in several frequency bands and obtain imfs of recording signals through EMD method and then obtain functional networks in these bands and imfs by using gragh theory tool, then compare topographical properties between musicians and nonmusicians.
Comparing the two groups during the listening tasks, the clear-cut difference was found in phase synchrony, which was significantly stronger in musicians while listening to every chosen piece of music and silence. Also the results show enhancement of clustering coefficient and decrease in path length in the musician functional connectivity networks.
Keywords: EEG, Music, Gragh theory, brain functional networks, Synchrony
