There is something in my Dream World called the Imperius Curse. It is akin to posession, where the caster of the curse is in complete control of his or her victim.
I have not had the opportunity to use the curse in this world, nor have I heard of it being cast here. It was commonplace in my dreams during two separate wars. I have cast it. I have felt its effects.
I can give you more information on this, if you believe it is applicable to your research.