Mechanical Vibration Wiley PDF) Fundamentals of Vibrations Leonard Meirovitch Vibration Principles of Vibration Benson H. Tongue Google Books The vagus nerve is a primary carrier of information describing the state of the body to the brain, and transmitting information from the brain back to the body. It's a feedback mechanism Application of biomimetic tongue substrate to investigate the role of friction and vibration in sensory texture perception ScienceDirect