Combined Auditory and Tragal Stimulation Headphone Effectively Increases Vagal Tone and Improves Short-Term Cognition

Abstract
The autonomic nervous system is responsible for many psychological and physiological phenomena. Music is known to influence the autonomic nervous system and provide many beneficial effects in both the body and the mind. The vagus nerve has also been stimulated to invoke similar beneficial effects. Since this procedure is invasive, the tragus nerve, which is the only input to the vagus, is ideal for autonomic modulation.