3-D vision is an abstraction that our brain recreates in our heads from 2 different 2-D images(left and right eye). The brain processes the deviations between each image to make a best guess at how the world around it should be perceived, in 3-D. So what happens when those separate images are artificially switched before entering our eyes(ie. from using 3-D goggles). Our brain is still receiving the same images, but the expected parallax deviation is reversed in each eye. How does the brain interpret what it sees? I assume that there have been many experiments done on this.
Yes. It is very hard to resolve, since the eyes will continually go out-of-sync, resulting in double-vision, but if you can hold on to it for a while, it looks lke things are inverted. Big things are far away, small things are nearby. Don't forget, one confounding (or mitigating) factor: you can only focus on one small spot at a time, so everything outisde that focus will appear double. Some photo forums I frequent post their pics in 3D format - one pic with 2 images side-by-side, each from slightly different angles. There's two ways to do this: 1] "wall-eyed" - your sightlines from each eye are parallel (left eye sees left pic, right eyes see right pic) 2] "cross-eyed" - your sightlines cross (left eye sees right pic, right eyes sees left pic) They prefer cross-eyed for some reason. So they put the left-eyed mage on the right of the pic, and the right-eyed pic on the left. I grew up with wall-eyed, so when I look at their pix, they look sort of inside out. It's very difficult for me to employ the cross-eyed method.