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Brain tunes itself to criticality, maximizing information processing - ScienceBlog.com

Taking advantage of their ability to continuously track the activity of neurons for more than a week, the researchers first confirmed that network dynamics in the visual cortex are robustly tuned to criticality, even across light and dark cycles. Next, by blocking vision in one eye, the researchers revealed that criticality was severely disrupted, more than a day before the manipulation affected the firing rates of individual neurons. Twenty-four hours later, criticality re-emerged in the recordings — at which point individual neurons were suppressed by the visual deprivation.