The homunculus, representing sensory cortex cells for touch, originated from Wilder Penfield's 1940s recordings of epileptic patients' brain activity.

“You go to any neuroscience 101 medical school textbook and there's something you'll you'll see a few pages on something called the homunculus. Now, what is the homunculus? It's a data representation, but it it'll be this sort of funnyl looking creature when you see it. But that picture of this sort of distorted human that you're looking at is really just um a data representation of how many cells in your brain are helping or coding and representing information for your sense of touch, right? And that that image though and this is where things get kind of funny. That image comes from Wilder Penfield back in the 40s. He recorded the he would semataensory cells of uh of patients just before they were to have you know surgery for epilepsy and such.”