I'm beginning to understand what this means, I think. I go through periods where everything looks unreal, like made of some weird material or plastic even. My hands don't look like my hands, and they go numb where I don't feel them. These periods last quite sometime. It's really interesting when I go into a supermarket where I seem to go into sensory overland from all the noise and colors. I guess I'm so used to it that its normal to me and I've learned to live past it.