User blog comment:Wilesjeffery2152/Agent Artifact Challenge/@comment-24509764-20140314224552/@comment-24509764-20140315170558

I might have something: Donald Ewen Cameron's tape recorder, when played, changes the listener's psyche and personality. This can cause a model citizen to turn into a hardened criminal, or a sane person to become manic. They need to listen to it while asleep to activate, and it will keep them in a sleep-like state. If the person has been stopped, but the artifact not neutralized, they will fall into a coma which will last until the artifact is neutralized.