not speech. whether through signing or speaking, the brain simply wanted the patterns of language. but for more than 100 years, it was universally accepted that a certain part of the brain, the superior temporal gyrus was to process sound. >> we gave profoundly deaf people, while they were inside a brain scanner, phonetic units be you in signs. these were bits and pieces of signs that had no meaning. they're like the i said to you ba-ta. ga-ta. just springs of phonetic units. there what we found is that profoundly deaf people exposed to sign language were having extraordinary activity in just that tissue that had been thought to be the exclusive bastian for the processing of sound. it raised questions about how is it possible, why didn't that