The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
So it's a two-way street and sensory information is going up to the brain. That's all vagus. So it's like a super highway sensory information going one way and in the other direction is motor control. So the vagus is not just for sensing things. It's actually for controlling things. It's got a sensory pathway and a motor pathway.
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basically vagus is the 10th cranial nerve which basically means that the neurons, the control center of each of those neurons in the vagus lives just kind of near the neck, right? And a branch of the vagus goes into the brain. They send a little wire into the brain. The other branch goes into the periphery but not just the gut. It goes into the stomach, the intestines the heart, the lungs, and the immune system.
The vagus nerve, however, is responsible for emotion and the way it does that is to pool, to aggregate the conditions of your gut, the conditions of your heart and the conditions of your breathing, which includes your diaphragm and lungs and takes that kind of as a collection of information and sends it to the brain and controls what we call your emotions.
And a large part of this bidirectional communication is also mediated through the vagus nerve, which many of your listeners and viewers may have heard about because it's become a topic of intense activity now.
The vagus nerve, however, is responsible for emotion. And the way it does that is to pull to aggregate the conditions of your gut, the conditions of your heart, and the conditions of your breathing, which includes your diaphragm and lungs, and takes that kind of as a a collection of information, and sends it to the brain and controls what we call your emotions.