Wow! great article. Maybe I did not understand everything fully with all the abbreviations but I think I got the gist of it.

My interest (because of my heart history)is in the Vagus nerve and how it can mediate the heart rate and rhythm. https://medium.com/@jancovorstermyafibheart/10-ectopic-heartbeat-vagus-nerve-palpitations-tips-for-you-b8b2acd4dbbe?

The more I read about the Vagus nerve the more questions I get.