But isn't there a sync between the brain and the speech muscles when a person is talking though? I have read this in countless articles by SLPs. Maybe I'm not describing it accurately because I'm not that clear about it myself. Why is it that so many stutterers only stutter when they talk, but have no problem singing? People aren't completely blank when they're talking. But based on my experience, it's almost like when people are talking....they first form the general idea in their head about what they want to say, and then they begin talking and describing the idea. The words are formulated as they talk. Different from an actor who is reading a script. Obviously they don't say everything on their mind....nobody would want to do that Lol. They're in control of what they say, but they don't plan all the words beforehand. They plan the idea beforehand, and do their best to describe the idea. Think of this way. You tell an artist an idea of what to paint, and he/she paints it in front of you to best describe this idea. Whereas if you told the artist to recreate a famous painting...........that would be more like just photocopying. When people talk in conversation, they are painting their ideas right? That's the reason why people use filler words like '' um '' or '' uhh ''.