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Try this bizarre audio illusion! ๐Ÿ‘๏ธ๐Ÿ‘‚๐Ÿ˜ฎ - BBC

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For anyone, no background needed. Education, not medical advice.

5.7M views15 years ago2 recommendations

Brain and nervesNeurosciencePhysiology

This demonstration of the McGurk effect shows how visual information from lip movements alters the speech sounds we perceive.

Subscribe and ๐Ÿ”” to the BBC ๐Ÿ‘‰ bit.ly/BBCYouTubeSub Watch the BBC first on iPlayer ๐Ÿ‘‰ bbc.in/iPlayer-Home Try The McGurk Effect! The McGurk effect is a compelling demonstration of how we all use visual speech information. The effect shows that we can't help but integrate visual speech into what we 'hear'. More about this programme: bbc.co.uk/programmes/b00vhw1d Horizon: Is Seeing Believing? - BBC #bbc #McGurkEffect #illusion

Why it's here

2 people recommend this, 1 disputes it

What people say. Highly recommended as a classic and compelling demonstration of how the brain integrates visual and auditory sensory inputs.

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"People already lie to themselves" The most compelling illustration I've seen of this is the McGurk Affect1. 1 link to this video

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If you like this sort of thing, and haven't heard of the McGurk Effect before, take a look at this: link to this video .

thehodgein Hacker News โ€ข Disputes

On โ€œTry The McGurk Effect - Is Seeing Believing?โ€

This was on reddit the other day direct with a link to youtube, this feels like blogspam to me cashing in on hunch adds no value and shows a tiny player. link to this video Direct Link

Green Noobin Skeptics Stack Exchange โ€ข Mentions

I watched link to this video video on YouTube about the McGurk effect. Then I saw the following comment on Google+ : Singularity Utopia Feb 25, 2012 (edited) I am often sceptical regarding so-called illusions. I listened without looking and there seems to be cycle of 3 utterances; the first utterance is "baar", the middle one is ambiguous (but leaning towards baar), and the third is "faar" (they are actually all rather ambiguous). It is incorrect to say what we hear may not always be the truth, it is incorrect to say we may not able to trust what we hear. Even regarding the more clearly enunciated 1st and 3rd utterances there is a degree of ambiguity, which I suspect is an intentional bโ€ฆ

joeyoin Hacker News โ€ข Mentions

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> The disbelief came when it was time to listen to singular > words. With the screen turned off, I got 0%. With the > screen turned on, I got 8%. Thatโ€™s crazy! It's really amazing how pervasive (putatively Bayesian) multisensory integration of information is in the brain. Even individuals without impaired hearing have their auditory perceptions strongly a affected by other inputs. The McGurk effect is a great example of this: link link to this video

forgottenpaswrdin Hacker News โ€ข Mentions

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Sub vocalizing is the fact or reading syllables instead of entire words at once. Deaf could find very useful to vocalize words as they could read peoples lips and faces based on those units. Everybody read lips and faces subconsciously, there are famous illusions in witch people hear different sounds with the same sound file depending of the video of a mouth they watch: link to this video

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โ€ฆtimuli. Here are two illusions, in different sensory modalities, that demonstrate the strong top-down influence of the brain on perception: The rubber hand illusion 1,2 and the McGurk effect 3,4. The rubber hand illusion is particularly relevant because it is quite similar to the phantom phone vibration effect. 1. link 2. link 3. link 4. link to this video EDIT: Here's an additional example to consider. People generally can't tickle themselves. The sensations are less strong when one touches oneself than when someone else does so. The explanation for this is that the brain automatically discounts sensations which arise as a result of self-motion. This has obvious advantages, namely that you dโ€ฆ

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It is really interesting and amusing how persistent certain 'illusions' can be even when one is exposed to it just once and for a short time. Fun story, this was a long time ago: I was interning at Google at that time. One day I tell my then cube neighbor about an interesting experiment on visual perception that I had read about. A professor at MIT had carried out experiments on his class. Students were asked to wear prismatic goggles that shifted their vision and then try to catch objects. Hilarity ensued, but soon enough the brain adapted to the shift. Same with inverting glasses, soon the students would not even realize that their vision was inverted. The fun part was when they took theirโ€ฆ

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I originally started with web resources, but here's the stuff I credit with really advancing me properly, roughly in the order I read or used it: 1. TTMIK's Hangeul Master . It's really easy to pick up hangul basics so spending $20 on a book that's superficially just about the alphabet might seem silly. But the harder part to learn isn't really the symbols, it's the pronunciation. You need to get to grips with the various sound change rules that apply when various characters are adjacent to each other, and with the pronunciation differences between the normal and tense consonants, and so on. If you can't look at a word and confidently form its sound in your head you can't read or write efficโ€ฆ

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Brief reminder that what you hear is being reinterpreted by your brain to match the things that you see. link to this video

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great link thanks! it's like the McGurk Effect link to this video , and why I time Vocal Text to appear just before you hear it link

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Fooling humans is much easier when about 50% of the sound is always accurate (in any case it's a wooden drumstick hitting something). The human mind is very forgiving, especially when vision accompanies sound (McGurk effect 1) Furthermore this fixed variable makes the pool of samples to choose from much much smaller. Still impressive of course ;) just far from dubbing any video there is. 1 link to this video

anotheryouin Hacker News โ€ข Mentions

On โ€œLooking to Listen: Audio-Visual Speech Separationโ€

I wonder if we will have visual assisted tts. Humans do it: link to this video The McGurk illusion is so strong that I'm sure visual cues have a major role in error correction or voice recognition assistance for humans.

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Are you talking about the McGurk effect? You hear either Ba or Fa depending on which you expect to hear based on the lip reading (but the sound that is actually playing is Va): link to this video It is really cool that small contextual information can change our senses so dramatically without us being aware of it happening.

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>For some reason I can easily understand people on video chat even if they have strong accent whereas I can't grok anything on a phone call. See the McGurk Effect: link to this video

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It was people clapping in mission control but your brain wants to think the sound matches the images so your brain tricks you into thinking it is the sound of water splashing. This is sometimes known as the McGurk effect link to this video