The vagus nerve connects the brain to organs in the abdomen and chest and collects information from them.

“So the vagus nerve, it's the 10th cranial nerve. It comes from the brain, it goes down and innervates the heart and innervates the gut. And by innervate, I mean it sends little connections down to help guide what happens in these organs in the abdomen and chest. It also collects information back, and there's information coming back from all those organs that also go through this vagus nerve, the 10th cranial nerve, back to the brain. And so this is somewhat of a super highway to the brain, and it was the idea.”