A switching mechanism of the default-mode network in the brain at criticality |
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| Institution: | 1. College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. College of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China;3. Institute of Physics, Academia Sinica, Taipei 11529, Taiwan;4. Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan;1. School of Electrical Engineering and Automation, Anhui University, Hefei, China;2. Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong;1. Crystal Lab, Department of Physics & Astrophysics, University of Delhi, Delhi 110007, India;2. Department of Physics & Electronics, SGTB Khalsa College, University of Delhi, Delhi 110007, India;1. Independent Researcher, P.O. Box 53, Ntui, Cameroon;2. Chaos and Complex Systems Research Laboratory, Department of Physics, University of Burdwan, Burdwan 713 104, Burdwan, India;3. Fundamental Physics Laboratory, Department of Physics, Faculty of Science, University of Douala, P.O. Box 24 157, Douala, Cameroon;4. Laboratory of Modelling and Simulation in Engineering, Biomimetics and Prototypes, Department of Physics, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon |
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| 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. |
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