Stretching Your Mouth Affects What You Hear, Scientific American 28/5/2009
Depending on how a mechanical device pulls and tugs areas around the mouth, the volunteer will hear and interpret speech sounds differently
By Erica Westly
Neuroscience textbooks typically portray the five senses as separate entities, but in the real world the senses frequently interact, as anyone who has tried to enjoy dinner with a stuffy nose can attest. Hearing and vision seem similarly connected, the most famous example being the “McGurk effect,” where visual cues, such as moving lips, affect how people hear speech. And now new research shows that touch can influence speech perception, too.

