Intraoperative arousal anesthesia is generally used in neurosurgery and corrective spine surgery. This is because these two surgeries involve a very large number of functional areas. By functional areas, it means that language, motor and other functions have corresponding functional areas in the brain distribution. If the surgery damages the functional areas, the patient may suffer complications such as aphasia and hemiparesis after the surgery. The reason for intraoperative arousal is to have the patient cooperate with the surgeon’s instructions, such as speaking and singing, during the operation. Or as you have seen in the media, patients play guitar, sing, or even say poems during the operation. The above are all ways to wake up anesthesia, that is, through the patient’s cooperation, it can let the surgeon know whether the resected area is next to the functional area, which helps the surgeon judge the relationship between the lesion and the functional area, that is, in layman’s terms, where to cut next and how much to cut, by this way, the surgeon By doing so, the surgeon can have a good idea of what to do in order to reduce the chance of postoperative complications of aphasia or hemiparesis in the patient.