A lot of what AI is doing (pattern matching, creative problem solving, etc) could be considered “right brain” activities. Some think that many human mental problems arise out of an unchecked, overactive right brain. We still mistake shadows on the wall for something sinister, or read more into a person’s glance than is really there.
Some posit that the right brain is always hallucinating, in a sense; that psychedelic drugs simply disable the left brain, and allow the right brain to take center stage. Until the corpus callosum developed (which allows the left and right brain to send data back and forth across the divide), it’s possible that right brain insights came to us as “voices” in our heads.
See: “Incognito: the secret lives of the brain.”
“The Dragons of Eden: speculations on the evolution of human intelligence.”