Vagus Nerve Stimulators: Most Are Bunk
Most non-invasive vagus nerve stimulators don't hit the nerve correctly. The nerve fibres barely reach the ear, and most ear-based devices aren't positioned in the right spot — the cymba concha. The neck-based devices are more promising and are FDA-cleared for migraines. But Setpoint Medical's implant — the size of an omega-3 capsule, inserted as an outpatient procedure — is the real frontier.
