Spatial multi-scaled chimera states of cerebral cortex network and its inherent structure-dynamics relationship in human brain

Human cerebral cortex displays various dynamics patterns under different states, however the mechanism how such diverse patterns can be supported by the underlying brain network is still not well understood. Human brain has a unique network structure with different regions of interesting to perform cognitive tasks. Using coupled neural mass oscillators on human cortical network and paying attention to both global and local regions, we observe a new feature of chimera states with multiple spatial scales and a positive correlation between the synchronization preference of local region and the degree of symmetry of the connectivity of the region in the network. Further, we use the concept of effective symmetry in the network to build structural and dynamical hierarchical trees and find close matching between them. These results help to explain the multiple brain rhythms observed in experiments and suggest a generic principle for complex brain network as a structure substrate to support diverse functional patterns.     

韩东小说与九十年代写作

韩东九十年代的小说创作扎根现实生活的感受，提出“生活在此处”，拒绝乌托邦，力争追求“形而上”与“形而下”的结合，书写对于文学与生活的理解，体现了九十年代文学写作的特征．