In Human Anatomy and Physiology we have been discussing the brain and its ability to “fill in” missing information. The McGurk Effect (named after Harry McGurk of McGurk & McDonald, 1976) ref, is a great example of what the brain does when information it receives is in conflict. Take a look, it doesn’t matter if you really know what is happening, the machinery in your brain works the same.

Be sure to take a listen with your eyes closed.