Similar to what you are talking about. I have alway's wondered how certain blind people imagine a tree. Assuming they were blind from birth. Let's say they have had a tree described to them as having a brown trunk (cylinader shaped) with long thin branches which are also brown. Attached to these brances are green leaves. I'm sure the shape would be close to our preception because they can feel that along with texture. But as for colors and the over all picture it would be difficult.

I have always wanted to talk to a blind man about this and ask him to try and describe in detail how he imagines a tree or anything else.