Ok gave the sutra the once over.
Good heavens what a can of worms I have opened. I am no longer sure what exactly it is that I am perceiving: the sutra speaks in terms of more elemental things, I think. But I am sure of how these things are operating, so the remaining question is: what are they?
It all looks closely linked to the five aggregates. The "mood states" of which I spoke appear to be composed of every imaginable mix of emotion: or more accurately, they LEAD to every imaginable mix of emotion. It is as if they were fields of earth, and one could say, from this field will arise 10% wheat, 30% barley and 60% corn, while this other field will give rise almost entirely to peach trees....
What a fascinating business. My "mood states", from which moods and emotions arise, have an obvious element of self-conception in them, and they also have a strong appearance of inherent existence.
Well I think the best thing to do is to give this all a couple of days to sink in. The sutra implies about a bazillion ways of looking at these peculiar critters, so right now I am somewhat overwhelmed by all the possibilities. And I can't figure which comes first, self concept, afflictive emotion, or frame of mind. Maybe it's not important anyways.