DKA Rho Class Practice Test

Persistence of vision is the brain’s way of blending successive images into a single, continuous scene. When frames are shown in rapid succession, each image leaves a brief afterimage on the retina, and this lingering image overlaps with the next frame. The result is a seamless perception with no noticeable space between frames. Frame rate affects how smooth the motion appears—the higher the rate, the less noticeable any stutter—but the continuous perception itself comes from persistence of vision. The other terms describe different ideas: displacement is about movement from one position to another, frame rate is the speed of presenting frames, and interlacing is a method of displaying video by alternating lines, not the phenomenon that merges frames into one image.