Facial Nerve Monitoring/Mapping is used in surgeries near the facial nerve to prevent damage and preserve facial function. Assessing the facial nerve’s integrity and function through electrical stimulation and muscle response recording in real time is critical in procedures like parotid gland surgery or ear surgery, where the facial nerve is at risk. Identifying and monitoring the facial nerve’s course and functionality during surgery enables surgeons to make precise adjustments to avoid damaging the nerve, minimising the risk of postoperative facial paralysis or weakness, thereby enhancing patient outcomes and safety.