I think this is pretty well established as far as neurologists are concerned and explains a lot of things. Like dreaming for instance.. just something like the model running without sensory input constraining it.
It goes through how sensations fit into this highly constrained, highly functional hallucination that models the outside world as a sort of bayesian prediction about the world as they relate to your concerns and capabilities as a human, and then it has a very interesting discussion about emotions as they relate to inner bodily sensations.
Hinton had a course on Coursera around 2015 that covered a lot of pre NN deep learning. Sadly I don't think it's up anymore.
https://www.youtube.com/playlist?list=PLoRl3Ht4JOcdU872GhiYW...