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McGurk effect - Auditory Illusion - BBC Horizon Clip

sixesfullofnines · demo · Watch on YouTube

Neuroscience & the brainMagic, puzzles & curiosities

What it is

A two-minute BBC Horizon clip demonstrating the McGurk effect, where what you see of a speaker's mouth changes the sound you hear.

Why Hacker News recommends it

Recommended as a quick demo of vision overriding hearing, and cited as an example of perception producing confident wrong answers.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2021, last 2025

What HN commenters said

  1. “Very worth your two minutes if you're not yet familiar with the effect”

    Two-minute demonstration of the McGurk effect.

    beagle3, 2021-04 · Recommendation · in “Google open-sources the Lyra audio codec”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: mcgurk effect, illusion, perception, neuroscience, lip reading

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