The inner homunculus

"Penfield found those visceral signals harder to decipher than the brain's map of the body's surface. Brain regions responsible for different internal sensations seemed to overlap. Sensory regions were hard to distinguish from those that sent motor instructions such as telling the intestines to contract. Penfield once asked participants to swallow an electrode to detect changes in gut contractions while he stimulated their brains. But his map of the inner organs was blurry and ambiguous—and stayed that way for most of the next century."

https://www.science.org/content/article/newly-detailed-nerve-links-between-brain-and-other-organs-shape-thoughts-memories-and?utm_campaign=SciMag&utm_medium=ownedSocial&utm_source=LinkedIn