To test complex brain functions during neurosurgical procedures, surgeons must operate on awake, locally anesthetized patients. This allows surgeons to interact with them and test how their intervention affects brain function. However, opening the skull while the patient is awake is extremely stressful for them psychologically. A new robot-assisted and optically precisely monitored laser procedure developed by the Fraunhofer Institute for Laser Technology ILT in Aachen is set to enable gentle, vibration-free and virtually silent craniotomies while the patient is awake. The bone tissue of the skull is ablated using short-pulse laser radiation.