This is a new word to me and the post is copied from another Forum discussion on the Vagus nerve.
Neurocardiology refers to the pathophysiological interplays of the nervous and cardiovascular systems. It is an emerging field in medicine over the last decade. The constant communication between the heart and the brain have proved invaluable to interdisciplinary fields of neurological and cardiac diseases. (I copied this from Wikipedia)
They are talking about the communication between the brain and the heart, but they should have included the gut and the heart.