Does the brain see the world or predict it? Visual neuroscientist Lars Muckli presents evidence that early visual cortex receives top-down predictive signals from higher areas, challenging the textbook view of vision as a purely bottom-up feature extraction process and raising hard questions about where prediction ends and perception begins. Subscribe for more from the Convergent Science Network podcast series. Lars Muckli joins Paul Verschure and Tony Prescott to explain how apparent motion, one of the simplest visual illusions, became a window into the predictive architecture of the visual brain. Using fMRI with retinotopic mapping, Muckli's lab discovered that the space between two alternating dots is filled with neural activity that cannot be explained by local V1 processing alone. EEG experiments revealed that motion-sensitive area V5 respon ...