Nick stares at a spiral shaped object that is spiraling outward. The movement stops after some time and he stares at the still image. As a result of motion aftereffect, the object would appear to be:
A) spiraling inward.
B) spiraling outward.
C) moving sideways.
D) moving vertically.

Question

Quizplus · Accepted Answer

The motion aftereffect occurs when, after staring at a moving object for a time and then looking at a stationary scene, the stationary scene appears to move in the opposite direction of the original movement. Since Nick was staring at an object spiraling outward, he would perceive it as spiraling inward due to this effect.

Nick Stares at a Spiral Shaped Object That Is Spiraling