Cum oprește anestezia generală conștiența

Over 350 million surgeries are performed annually under general anesthesia, yet the mechanisms behind how anesthetics induce unconsciousness remain unclear. Recent research is shedding light on brain functions and consciousness origins. Various anesthetics, including propofol and xenon, disrupt communication between nerve cells, leading to reduced brain activity. The thalamus appears to be the first area affected, raising questions about its role in consciousness. Some patients experience a phenomenon called accidental awareness, where they recall aspects of surgery. Studies suggest that general anesthesia alters brain connectivity, making individual brain patterns less unique and more similar to those of other primates, indicating that consciousness arises from a network of brain regions rather than a single area.