It varies for me depending on my mood state. I find it most vivid in bouts of psychosis. I remember once being in such a state and being overwhelmed by my mind'

It varies for me depending on my mood state. I find it most vivid in bouts of psychosis. I remember once being in such a state and being overwhelmed by my mind's eye seeming even more vivid than the images coming into my actual eyes. Seeing two distinct views at once was quite disorienting.