关键词: 失匹配负波, 功能性网络, 复杂网络, 网络结构熵

Abstract: It establishes a functional brain network according to the Mismatch Negative（MMN） wave data of normal people and patients with hearing impairment. With calculated the complex networks statistical characteristics of the functional brain network, it finds that the established functional brain network has similar no scaling properties with respect to the random network, but also has high clustering coefficient, small characteristic path lengths of small world network characteristics. In addition, the average degree of functional network and network structure entropy are calculated. The results show that the average degree, clustering coefficient and structure entropy of the functional network are higher than those of the patients with hearing impairment. It indicates the reduction of functional connectivity after hearing loss may contribute to the decreased spatial discrimination. The functional network parameters of average degree, clustering coefficient and network structure entropy may be considered as the central markers with reflecting the capability of spatial discrimination.

Key words: mismatch negativity, functional network, complex network, network structure entropy