Which theory suggests that you initially get a general, categorical impression of the world from higher brain areas and then later appreciate details after activation flows back down to lower brain areas?

The correct answer to the following question will be "Reverse-hierarchy theory".

Explanation:

It argues that training seems to be the level-down (high) driven mechanism that starts at strong-level areas of that same visual cortex and progresses downwards to feedback areas since these are not enough, which would have a better noise-to-noise proportion. This type of learning could be described as an enhancement of the ability to execute particular perceptual activities that are caused by experience or practice.

Therefore, this theory is the right answer.