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- W2980277777 abstract "Integrated information theory (IIT) describes consciousness as information integrated across highly differentiated but irreducible constituent parts in a system. However, in a complex dynamic system such as the brain, the optimal conditions for large integrated information systems have not been elucidated. In this study, we hypothesized that network criticality, a balanced state between a large variation in functional network configuration and a large constraint on structural network configuration, may be the basis of the emergence of a large Φ, a surrogate of integrated information. We also hypothesized that as consciousness diminishes, the brain loses network criticality and Φ decreases. We tested these hypotheses with a large-scale brain network model and high-density electroencephalography (EEG) acquired during various levels of human consciousness under general anesthesia. In the modeling study, maximal criticality coincided with maximal Φ. The EEG study demonstrated an explicit relationship between Φ, criticality, and level of consciousness. The conscious resting state showed the largest Φ and criticality, whereas the balance between variation and constraint in the brain network broke down as the response rate dwindled. The results suggest network criticality as a necessary condition of a large Φ in the human brain." @default.
- W2980277777 created "2019-10-18" @default.
- W2980277777 creator A5033058195 @default.
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- W2980277777 date "2019-10-08" @default.
- W2980277777 modified "2023-10-11" @default.
- W2980277777 title "Criticality as a Determinant of Integrated Information Φ in Human Brain Networks" @default.
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- W2980277777 doi "https://doi.org/10.3390/e21100981" @default.
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