You think, therefore you have a brain!

I have a brain - but if it doesn't do much, does it count? :D

I wonder if those are going all the time, underlying and influencing my more deliberate reason.

I assume so. I think that "clearing the mind" is more about cutting out the noise so we can see what is there beneath - but there is always something right?

I think there is room for those underlying thoughts to undermine us, influence us outside of our awareness, and trick us into thinking that it is right, because it feels right.

Do you now come to conclusions that are different from those of your pre-stroke brain's?

Yes, but not in a good way. Normally, our unconscious awareness makes us somewhat aware of what we don't explicitly see. My unconscious doesn't do much of that, so I only get to work with what I already know and can recall. It is very limiting.

You've been given (the hard way) something that yogis spend lifetimes trying to receive.

Maybe it is the easy way! Perhaps, if those yogis had this skill, they wouldn't want it for long.