Audiovisual illusion Do you hear BA-BA, GA-GA or DA-DA? :-) Most adults (98%) think they are hearing "DA" - a so called "fused respons" - where the "D" is a result of an audio-visual illusion. In reality you are hearing the sound "BA", while you are seing the lip movements "GA".
The "McGurk effect" was first described by Harry McGurk and John MacDonald in "Hearing lips and seeing voices", Nature 264, 746-748 (1976).
Okay, so we've all seen the optical illusions... but have you guys ever heard of auditory illusions?I was procrastinating the other day and came across this....
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