It starts off as colors moving around, shapes, like rainbows flying across my vision, or blobs of transmuting colors, basically simular to Itunes visualizations. If I keep focusing on those blobs and colors, I can start seeing more complex shapes emerge like fractions but also faces, silhouettes of people, or other more "real" visuals, then if I focus more the images become much more life-like, like people walking by the river in high fidelity and I am totally conscious the whole time. It does require focus though, if I lose focus I can quickly lose the life-like visual and i'm back to blobs of color.