On the synchronization of EEG spindle waves

Based on recently sleeping cellular substrates, a network model synapticall y coupled by N three-cell circuits is provided. Simulation results show tha t: (i) the dynamic behavior of every circuit is chaotic; (ii) the synchroni zation of the network is incomplete; (iii) the incomplete synchronization c an integrate burst firings of cortical cells into waxing-and-wanning EEG sp indle waves. These results enlighten us that this kind of incomplete synchr onization may integrate microscopic, electrical activities of neurons in bi llions into macroscopic, functional states in human brain. fn addition, the effects of coupling strength, connectional mode and noise to the synchroni zation are discussed.