Human body has energy which determines you are sick, tired, bored, excited and angry or not. According to Physics music is placed in energy spectrum as one part of sounds and volumes, which can affect our body energy. On the other side the rhythmical and compositionality feature of music reinforces this consequence, due to these features, music is more populare than the other hobbies. We often use music in our daily lives, for example, from ringing the doorbell to using the phone or waiting in the elevator to reach the desired floor and etc. it is one common and available supplementary that human can use it for treating different diseases. The music plays an important role in activation of parasympathetic part via the vagus nerve stimulation. The vagus nerve is a tenth nerve of twelve cerebral nerves. The tenth nerve is one of the most important nerves which originates from the brain and is responsible for innervating face, thorax, abdomen and etc. It is a motor sensory nerve. The vagus nerve is also involved in the parasympathetic system. This nerve has two sensory ganglia that transmit sensory impulses: the superior and the inferior ganglia, by which we can affect parasympathetic Nervous System for improvement. Generally these ganglions innervates different part of body such as: ear (where the most stimulations happen in this place), larynx, heart, pulmonary system, abdomen and abdominal viscera. Because of this innervation vagus nerve stimulation can change the activity of pulmonary system, heart, abdomen, intestine and etc. The music stimulates the vagus receptors of the ear.

The goal of this article is review the music effects on vagus nerve for treating some diseases such as gut problems, mental health disorders, heart problems, epilepsy, seizures and etc. Finally, since music is always accessible and the human body utilizes it on a daily basis, we can use music as a complementary method in occupational therapy.

Keywords: Music therapy, Vagus nerve stimulation, Occupational therapy, complementary therapy