The somatic marker hypothesis proposes that subjective emotional feelings are partly associated with bodily sensations.

“for the answer to the first question about the heat maps and people associating certain parts of their body with certain emotional feelings, this goes back to something called the somatic marker hypothesis, that was proposed by Antonio Damasio, who is a neurologist at USC, the idea that our subjective feeling of a particular emotion is, in part, associated with a sensation of something happening in a particular part of our body, the gut, the heart, I don't see the liver invoked very much in emotional characterization, but.”