Try The McGurk Effect! - Horizon: Is Seeing Believing? - BBC Two

More about this programme: http://www.bbc.co.uk/programmes/b00vhw1d

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'.

• Category

  Science & Technology

[Cale Gaster]

BBC - "Alright narrator girl, start talking every time he does the auditory illusion."

[Ultimate600]

An Irish man walks into a ...

[ThePossibleHeart]

how can this dude study this for 25 years??

[imofean]

I'm looking at a picture of Michelle Dockery ( eldest daughter in Downton Abbey ) while listening to this. It seems like she is narrating in the video..... McGurk Effect?

[fras0065]

Imgur brought me

[ahmadserajalamanipal]

right left right left : Ba Fa Ba Fa Ba Fa

[sincerelyquickstryke]

far?

[Candykingn]

baa baa baa, baa baa baa, im a sheep sheep sheep, sheep sheep sheep

[flamingpoodleofdoom]

Silly. I heard "fah" and "bah" without closing my eyes.

I do hear sounds in my head when likes turn on, change color, or pulse.

[Jonathan Belmont]

so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much to do so much too see so much so muc- fuck

[5994fps]

The guy needs to work on his diction. When I say BA or FA they sound nothing alike.

[Simon Machin]

This video's an advert for Colgate Toothpaste it has nothing to do with some daft illusion...