Science image (IMAGE)
Caption
In the classic Rubin’s vase optical illusion, neurons in the brain must decide whether the border between black and white belongs to the white area or to the black area, which determines whether you perceive the scene as either a black vase on a white background, or white faces on a black background.
Credit
Talking faces by solsken CC BY-NC-SA 2.0
Usage Restrictions
Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms.
License
CC BY-NC-SA