Pulsetto is a Lithuanian wellness company that makes a neck worn vagus nerve stimulator. The device sits against both sides of the neck and pairs with an app with programmes for relaxation, sleep and stress management.

How it works
Metal contacts send mild electrical pulses through gel and skin toward branches of the vagus nerve. This nerve carries signals between the brain and major organs and helps regulate functions linked with alertness and rest. The app controls session length and intensity, which can feel like tingling.

Key considerations
Reaching a deep nerve through skin, fat and muscle is less direct than stimulating an implanted electrode, and response varies between people. Correct placement and enough gel matter for comfort and contact. Premium app content can create an ongoing cost.