Neuroalbinism is a symptom of patients' self-feeling, including traumatic and spontaneous. Many patients have head trauma, including brain contusion and laceration, intracranial hemorrhage and even slight concussion. After the recovery period, they may have a neurological concussion, and the tone may be high or low, which has a certain impact on the patient's life.
There are also some patients with cerebral artery insufficiency caused by cerebral arteriosclerosis. These brain sounds, like cicadas, have been recorded in the patient's mind, but the relevant tests can't detect them.