1. A switching mechanism of the default-mode network in the brain at criticality
- Author
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You-Jun Li, Xiao-Gang Yin, Yue Chu, Chin-Kun Hu, Wen-Tao Zhou, and Chen-Ping Zhu
- Subjects
Artificial neural network ,Mechanism (biology) ,Computer science ,General Physics and Astronomy ,Biological neuron model ,Inhibitory postsynaptic potential ,01 natural sciences ,010305 fluids & plasmas ,Synapse ,Criticality ,0103 physical sciences ,State (computer science) ,010306 general physics ,Neuroscience ,Default mode network - Abstract
Many works confirm the anti-correlations between the default mode network (DMN) and the central-executive network (CEN) in the brain. However, the switching mechanism of the DMN itself is still lack of understanding from the viewpoint of neural network dynamics. Here we simulate the DMN with the Hindmarsh-Rose (HR) neuron model on the small-world network. We model the state of oscillator death and oscillatory firing as the inhibitory state and the activated state, respectively. We find that the DMN can regenerate from the inhibitory state when the input current of only one synapse is cut off at criticality. more...
- Published
- 2021
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