Sarah Sowaid on Instagram: "The Lilac Chaser, often called the “Pac-Man” illusion, is a well known visual illusion created by vision scientist Jeremy Hinton in 2005. It demonstrates how the human visual system interprets colour, motion, and stability in dynamic images. When you fix your gaze on the black cross in the middle for about 10–20 seconds, several striking visual effects typically occur: • A green dot seems to rotate around the circle, appearing in the space where one lilac dot vanishes