I have vague recollections of seeing a video where someone’s skull was wide open while scientists prodded it with some instrument of torture. Poke here, the person moves their mouth uncontrollably; poke there and they see everything in red. I was blown away; it was far and away one of the coolest things I’d ever seen, and is almost certainly one of the main reasons I got interested in neuroscience. I saw it in fourth or fifth grade, so I had recently been worrying that it was something of a fake. Nope! I just found out that it was Dr. Wilder Penfield who performed these experiments. He would operate on people with severe epilepsy and attempt to destroy the cells that caused the disease. Before he did that, however, he’d stimulate their brains with an electrode and ask them what they felt. Classic neuroscience right there, folks.
So watch these poor saps get their brains prodded! It is one of the coolest things you’ll ever watch.