Question

Why do the dots appear grey painted at the intersections of the grid?

​

Answer 1

Answer:

At the peripheral intersections (purple circle), most of the receptive field is flooded with white light, causing strong lateral inhibition which results in reduced gain and an area that appears gray.

Answer 2

Explanation:

At the peripheral intersections (purple circle), most of the receptive field is flooded with white light, causing strong lateral inhibition which results in reduced gain and an area that appears gray. More brain teaser games: Top 25 Brain Teasers, Games and Illusions. Brain Teasers for each Cognitive Ability.