ABSTRACT

Imagine for a moment a visual world in which there are no visual elements. You are able to see but your visual field is completely homogeneous. The situation described rarely exists in our normal visual world, but you can imagine, for example, being in a very dense fog, looking into a large integrating sphere, or flying an airplane through a dense cloud or at a very high altitude where the sky is completely uniform in brightness. Such imaginary situations approximate a homogeneous visual field, or Ganzfeld.