[AgentME]

I saw schizophrenia described by a person with it as "dreaming while you're wide awake". In a dream, your brain jumps on any details to invent more details to continue the dream. In a dream, if your brain says the dry cleaners are a shady government organization, then that's a valid and successful continuation of the dream, and dream reality bends to that. In waking reality, not so much.

[baccheion]

NMDA antagonists usually make it possible to dream while awake. Low NMDA goes with higher dopamine and higher NMDA with norepinephrine. Schizophrenia is said to be associated with poor NMDA signaling (high agmatine, low D-serine/coagonists, high NMDA receptor antibodies, etc).