I am taking a MOOC about this, provided by the U of Chicago. This is a very complicated subject, that my feeble old mind has trouble comprehending. Watch this lesson, and you will see what I mean.
I am assuming it will start you at the beginning of the lesson. If it doesn’t, you will have start it there yourself. The professor, Peggy Mason, knows a lot – perhaps too much.
We used to speak, rather glibly, about awareness or perception – without being aware of how many kinds there were, and how they interacted.