I would like to know what different type of studies have been done on brain processes. One type of question I have in mind is:

has how the brain process X been studied before?

has how the brain does task Y been studied before? What knowledge is out there in this context?

where for a specific example that I think I know is true is X=Image processing since it seems the visual system has been studied and we know about V1,V2,..etc.

For a more novel task I was interested how the brain processed abstract concepts like mathematics for example and how the brain might to mathematics. So I was curious to know what human type learning has been done for doing that. Is this type of question welcome here? Is research level question welcome to this cite?