Full-text search Fulltext search 2 Resultate Switching drugs on and off with light Swiss researchers have filmed for the first time how a drug was activated in the body with light. This film could give the development of such drugs a decisive boost. New algorithms help with anesthesia Anesthetic drugs affect the brain. But to tell if a patient will remain unconscious during surgery, most anesthesiologists rely on heart rate, breathing rate and movement. Algorithms could improve this process.