Anesthesia Brain Activity Study Reveals Hidden Listening

A small human neuroscience study suggests the brain may still process sounds and language during general anesthesia, even without conscious memory.

A new study found that the hippocampus, a brain region involved in memory and learning, showed signs of sound pattern recognition and language processing in patients under general anesthesia. The finding does not mean patients were awake or aware during surgery. None of the seven patients reported explicit memory afterward. Instead, it suggests that par…