Typically reductionist logic in that article though - just because CBD downregulates those parts of the brain in the lab doesn't mean that translates into a clinical benefit in real life for people with psychosis. If it did then why wouldn't the CBD in MJ counteract the psychosis inducing effects of THC? What they haven't considered is that the reason for that is that CBD takes on a regulatory function that is normally provided by one of the brain's own endocannabinoids, making it harder for the brain to self regulate and undermining defences against psychosis.

What this study does highlight is the link between certain psychotic symptoms and dysregulation of the endocannabinoid system which in itself is useful to know.