ChuckNorrisCutsMyLawn
Crusader
What I meant, and would be interested in seeing looked at would be the *infinitesimal* differences, if any, between states of very low MRI activity as opposed to high. I doubt they'd be measurable, but, I wouldn't be surprised if they existed.
That, for me, would be 'mental mass'
Zinj
I would think it's actual mass which could be quantified in grams, but I'm still not sure everyone is talking about the same thing. It seems like some people consider mental mass as being emotional baggage. And if that's the case, I can't see a mind having a different mental mass regardless of what mental images it contains if any at all, not more than I can see a flash drive memory stick having a different mass if it's memory is empty or full of data.