Spoons for your brain?

I know the idea of spoons (at least in the original story) was in regards to physical energy/ability, but do you think it can also be applied to mental energy/ability?

I've mentioned before that I have depression and I'm working my way through a sleep study, etc....usually I just refer to this feeling as "out of sorts" or being in a fog. But it doesn't really feel like that, or feel like exhaustion, really. It feels like...I've run out of spoons. I can't handle regular conversations or decisions or accomplishing tasks. Like a fuse blew in my head, and I have to wait until whenever it gets reset.