
Study: Some general anesthesia affects region of brain responsible for memory
April 1 (UPI) -- Different general anesthetics used during surgical procedures cause chemical changes in patients' brains, affecting memory, a study published Thursday by PLOS Biology found. Three commonly used combinations of anesthetics, tested on mice, all changed brain activity in the hippocampus -- the region of the brain responsible for memory -- compared to "wakefulness," or not being under anesthesia, or natural sleep, the study showed. Advertisement All anesthetics tested in the study affected the stability of synaptic connections between brain cells in the hippocampus. Two of the three combinations also caused retrograde amnesia, a form of memory loss impacting events occurring immediately before surgery, the researchers said. "Anesthetic procedures are among the safest medical...