Yes, it is a brain phenomenon. When the brain is deprived of sensory input it expects, it turns up the gain, looking for that input. Thus, itch and pain from limbs that are no longer there. And, ringing in the ears from damage to the hair cells in the cochlea that can no longer provide the sound the brain demands.
Yes, it is a brain phenomenon. When the brain is deprived of sensory input it expects, it turns up the gain, looking for that input. Thus, itch and pain from limbs that are no longer there. And, ringing in the ears from damage to the hair cells in the cochlea that can no longer provide the sound the brain demands.