A Person Who Loses an Arm May at First Have

Multiple Choice

A person who loses an arm may at first have a phantom arm and hand. Then after many years, the phantom may shrink, until only a hand is felt at the shoulder. This shows that

A) the pain and sensations are now passing directly through the pain gates.
B) the pain and sensations are now passing through the central biasing system.
C) phantom limb sensations are "sane hallucinations" that can be cognitively suppressed.
D) the brain gradually reorganizes to adjust for the sensory loss.