When unconscious, the brain is anything but 'silent'

The cerebral cortex is thought to be the seat of conscious processing in the brain. Rather than being inactivated, specific cells in the cortex show higher spontaneous activity during general anesthesia than when awake, and this activity is synchronized across those cortical cells. Improving our understanding of the neuronal mechanisms of general anesthesia could lead to better anesthetic drugs and improved surgical outcomes.

from Top Health News -- ScienceDaily https://www.sciencedaily.com/releases/2022/05/220512092618.htm