What is the McGurk Effect?

Have you ever wondered if your eyes can actually hear? It sounds like a superpower, but it is a real trick your brain plays on you every single day! Back in 1976, two scientists named Harry McGurk and John MacDonald accidentally discovered a mind-bending illusion. They played an audio recording of a voice saying "ba" over a video of a person's lips mouthing "ga." But instead of hearing the real sound, people heard a totally made-up third sound: "da"! This incredible glitch in our senses is called the McGurk Effect! Your brain doesn't keep sight and sound in separate boxes. Instead, it acts like a super detective, taking clues from your eyes and your ears to mash together one best guess! It is why looking at your friend's face in a loud, noisy cafeteria actually helps you hear their secret, and why badly dubbed movies feel so completely wrong! Join Mira and Finn as they explore how your eyes hack your ears to change the audio files in your brain. The craziest part? Even when you know the secret, you still can't turn the trick off!