Fun fact, when comprehending sign language the narrator voice is the same as when comprehending vocal language. By the same I mean that it works and "sounds" th

Fun fact, when comprehending sign language the narrator voice is the same as when comprehending vocal language. By the same I mean that it works and "sounds" the same, but obviously it has the grammar and vocabulary of whatever sign language you're communicating in. The exact same parts of the brain are at work, too. I think this implies that the narrator voice isn't really a "sound echo" but rather your comprehension at work. Just like when reading text.