In Hermann's grid, a possible explanation for why gray areas appear at the intersections is because _____.
A) the amount of inhibition right at the intersections is twice as great as the inhibition between each square
B) the amount of inhibition right at the intersections is much less than the inhibition between each square
C) the superior colliculus responds maximally as you move your eye from intersection to intersection
D) moving the eye creates a blur at all the intersections

Question

Quizplus · Accepted Answer

In Hermann's grid, the gray areas appear at the intersections due to lateral inhibition, which means that the activity of neurons in one area inhibits the activity of neighboring neurons. At the intersections, the amount of inhibition is twice as great as the inhibition between each square, leading to the perception of gray areas.

In Hermann's Grid, a Possible Explanation for Why Gray Areas