This is a very interesting question, if taken seriously which doesn't seem to be the case unfortunately. But well, in my opinion any disturbing thing is closely related to spirit and mind.
Many images or scenes are disgusting or scary because they're simply gore. They induce the disgust, which (I believe) is quite different. I think some pictures are disturbing as they bind us unconsciously (or not) with something in the field of mind. This is why I feel like : sad or 'insane' people are more likely to produce disturbing images. And are generally more receptive to these images aswell.