Movement Release - Stutterer

The supplementary motor area (involved in motor-program release) was very overactive and switched sides during stuttered speech. Notice that the activity is larger, more intense (brighter) and more on the right side than in non-stuttered speech. Scientist interpret this to mean that stuttering is an interruption of speech-motor programs, which this area must repeatedly restart.

Stutterers                      Non Stutterers
	Speech Preparation
	Movement Preparation
	Movement Release
	Mouth Movement
	Movement Coordination
	Hearing Yourself Speak