I can't answer your question, because I have basically the same question myself. I'm not sure I understand what "create a visual image" means. Like, literally see an image? What happens when your eyes are open? Something like a heads-up display? I know when I was in Lassen Volcanic National Park I was looking down on a lake. In the foreground there are rocks, then some dead pine trees. In the background there are mountains. I can "picture" it in the sense that I remember what I saw, and it was very beautiful. But I cannot, in any way, create an image of it, somehow magically (to me) in front of me, even with my eyes closed. But maybe I misunderstand what picturing something in the mind's eye means?

I can't answer your question, because I have basically the same question myself. I'm not sure I understand what "create a visual image" means. Like, literally see an image? What happens when your eyes are open? Something like a heads-up display? I know when I was in Lassen Volcanic National Park I was looking down on a lake. In the foreground there are rocks, then some dead pine trees. In the background there are mountains. I can "picture" it in the sense that I remember what I saw, and it was very beautiful. But I cannot, in any way, create an image of it, somehow magically (to me) in front of me, even with my eyes closed. But maybe I misunderstand what picturing something in the mind's eye means?