How would you test such a condition? When I paint (bloody amateur) I certainly can imagine a generic tree or house or something specific like my house or my garden tree. The latter takes more form of an image, but it is still quite abstract. It is not really a picture, it is a memory and quite fleeting. But if I would see a real picture, I would go to the doc.
What do you mean they cannot conjure an image. If you ask them to draw a dog they come out blank?
What do you mean they cannot conjure an image. If you ask them to draw a dog they come out blank?