You may well have spent hours wondering what your laptop is up to as it takes its time to boot up. Scientists have asked the same question of the human brain: How exactly does it restart after being anesthetized, in a coma, or in a deep sleep?
Using a group of 30 healthy adults who were anesthetized for three hours, and a group of 30 healthy adults who weren't as a control measure, a 2021 study reveals some insights into how the brain drags itself back intoIt turns out that the brain switches back on one section at a time, rather than all at once – and abstract problem-solving capabilities, as handled by the prefrontal cortex, are the functions that come back online the quickest.
A comparison with the control group showed that it took about three hours for those who had been anesthetized to recover fully.
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