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synaptome t1_j8af3a8 wrote

It does not. The McGurk effect is a cross modal illusion, which happens when one of your senses “hack” another. Speech is cross modal, hence the illusion, it works very well with anything visual/auditory and in theory it should with other senses (less obvious though). Here is a famous non speech example. In the case of the McGurk, visual information is processed more rapidly, which triggers an oscillatory response from the visual area. The auditory information does the same in auditory cortex. At some point, both are supposed to be integrated into one big coherent audiovisual perception, which is speech. But since the auditory information is lagging, if the visual information is slightly different, it will shift the oscillatory response toward the perception matching the visual information.

Source: I’m a neuroscientist and I worked on the McGurk effect.

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NorwegianGlaswegian t1_j8b4sfi wrote

It seems like a fascinating illusion; kind of wish that I were capable of experiencing it. I have autism spectrum disorder and have wondered why it's common for people with ASD to be immune to the McGurk effect, and if it has been possible to explore the reasons for this.

I have wondered if our tendency to be hyposensitive and/or hypersensitive to different kinds of sensory stimuli (not to mention difficulty parsing sensory information) might prevent certain forms of perceptual phenomena from occuring, or if a deficit or difference in some other area is a more salient factor.

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