Hypnotic Spiral Optical Illusion - Visual Perception Study #1903133 (License: Personal Use)

This high-contrast monochrome spiral features evenly spaced concentric circles that converge toward a tight central vortex, producing a powerful kinetic illusion. The alternating black and white bands exploit peripheral drift and motion aftereffect mechanisms in human vision, often causing perceived rotation or pulsation when viewed steadily. Widely used in visual perception research and optical art, it demonstrates how the brain interprets ambiguous motion cues.

Used in psychology articles, neuroscience explainers, UX design guides on visual attention, and art education pages about op art and perceptual illusions; targets users seeking educational visuals or examples of optical phenomena.