"Some of the most famous examples of confabulation come "split-brain" patients, whose left and right brain hemispheres have been surgically disconnected for medical treatment. Neuroscientists have devised clever experiments in which information is provided to the right hemisphere (for instance, pictures of naked people), causing a change in behavior (embarrassed giggling). Split-brain individuals are then asked to explain their behavior verbally, which relies on the left hemisphere. Realizing that their body is laughing, but unaware of the nude images, the left hemisphere will confabulate an excuse for the body's behavior ("I keep laughing because you ask such funny questions, Doc!")." https://www.edge.org/response-detail/11513
For others interested, look up Roger Sperry's split-brain experiments[1], done at CalTech. He received the 1981 Nobel Prize for the work. I'm surprised the above article doesn't mention it.
We don't cut cut peoples' brains in half any more, so it was a unique moment in time when they had people available with this condition, and the results are quite illuminating.
