the brain that will eventually become the auditory cortex, the sensory cortex, and the visual cortex are functionally undifferentiated, and inputs from the various sensory receptors may connect to many different parts of the brain, pending pruning that will occur later in life. As Simon Baron-Cohen has described it, with all this sensory cross talk, the infant lives in a state of complete psychedelic splendor (without the aid of drugs).
