What do mach bands best illustrate?
A) contrast effects
B) adaptation effects
C) movement effects
D) opponent-process effects

Question

Quizplus · Accepted Answer

Mach bands illustrate contrast effects, which are the perceptual effects that occur when neighboring areas of different brightness enhance or inhibit the perception of each other's brightness. In the case of Mach bands, the contrast between bands of slightly different brightness makes them appear even more different and exaggerated.

What Do Mach Bands Best Illustrate