Archive for September 17, 2016

Ninio’s Extinction Illusion

Posted in Uncategorized on September 17, 2016 by telescoper

This fascinating visual paradox has been doing the rounds on social media so I thought I’d share it here.

The twelve  black dots cannot be seen at the same time:


Reference: Ninio, J. and Stevens, K. A. (2000) Variations on the Hermann grid: an extinction illusion. Perception, 29, 1209-1217.