Fig. 3.

The construction of the brain network based on the CFC of theta-gamma during the WM period. A The topology of the brain network based on the PAC of theta phase and gamma amplitude. The nodes in the network were 16-channel electrodes in the brain network, and the connections between the nodes were the PAC values of theta phase and gamma amplitude between the multichannel electrodes in the brain network. B The connectivity matrices of the brain network based on the PAC of theta-gamma during the WM period (10 rats, average over 100 trials). The WM period was chosen from 2 s before the reference point to the rats’ selection action in the T maze. The networks can show how much each node interacts with one another. The horizontal and vertical coordinates represent the channel index and the scaled color represents the connectivity strengths between nodes. C The connectivity matrices of the brain network based on the AAC of theta-gamma. D The connectivity matrices of the brain network based on the PPC of theta-gamma