Neuvana is an American company that makes Xen, an ear based vagus nerve stimulator. The device is built into headphones and pairs stimulation with music or guided sessions. It is marketed for relaxation, focus, sleep and nervous system balance.

How it works
An electrode contacts the skin inside the ear and delivers mild electrical pulses intended to reach an auricular branch of the vagus nerve. The controller can synchronise pulses with audio through the Neuvana app. Repeated sessions aim to influence autonomic regulation between alertness and rest.

Key considerations
Response to stimulation varies, and evidence for Xen itself is limited. Correct ear contact is necessary, and users may feel tingling or skin irritation. People with implanted electronic devices, heart conditions or other contraindications should obtain medical advice.