It may look like nothing more than a black and white checkered image, but lurking in the design is a man’s face. A Japanese psychologist has created a baffling optical illusion with a ‘masking ...

Purpose To clinically evaluate the random dot stereoacuity cards developed by Birch and Salomao on a population of infants within the first 12 months of life and to generate baseline normative data.

Humans can perceive visual depth quite well. This is partly because the left and the right eye, being located only few centimeters from each other, see their surroundings from a slightly different ...