I don't have alters, not DID (and I WILL say this part of the forum is for ANY type of dissociative disorder, it is NOT an exclusive club for people with diagnosed DID), but I know I just have access to certain parts of my mind. In a way it is normal, in a way not.

I don't possess any real picture imagining skills (and did not when I was into art either), which means when I close my eyes and imagine, I only see a rudimentary image of the world. I don't see it in all colors, not in details, just in very broad strokes so to speak. More like a 3D map really.

I came down with a serious flu once and had an extreme fever for over a week. That brought me the ability of closing my eyes and see views in perfect detail. Vividly, in color, in detail. I could zoom in at a flower petal and look at it. I have no idea how that was even possible for me. As I was cured, the ability of course went away.

But the mind is a weird thing, that is for sure.