Comment Re:mental imagery in practice (Score 1) 165
Yes, but your dad's itch was in his missing part. If you had read TFS, you would have read she scratched her head with her phantom limb. If where she had perceived an itch was in the missing part... no, you can't perceive with a missing head.
She was asked to scratch her cheek. It wasn't a physical irritation, so it seems reasonable that the imagined itch could be relieved if the brain believed it was scratched.
This would also be true for itches caused by nonverbal body language expression. Your brain wants you to scratch your head, to signal puzzlement and thinking to those around you, so it suddenly makes you think that your head itches. See http://www.2knowmyself.com/body_language/body_language_state_of_confusion