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.