PEEPER on Instagram: "Follow us (@PEEPER) for more! 👀 In this optical illusion, known as induced motion or vection, a stationary woman on a median appears to glide forward like on a conveyor belt due to marathon runners streaming past her in the opposite direction on both sides. The brain relies on relative motion cues: the background (runners) moving backward tricks it into perceiving the foreground (woman) as advancing. This exploits how our visual system prioritizes contextual movement over