What is vagus nerve stimulation?

Vagus nerve stimulation (VNS) involves activating the vagus nerve, which is a major nerve emanating from the brain and connecting to several vital organs, including the heart, lungs, and digestive system. Contrary to common belief, VNS often increases alertness rather than inducing calmness. It's known to enhance brain activity and release neurotransmitters like dopamine. Originally developed for treating epilepsy, VNS is now also applied in therapies for depression and other conditions. It even shows promise in enhancing neuroplasticity. However, its effects can vary substantially among individuals. 1 2