Mouth Movement - Stutterer

Activation in the area responsible for controlling speech muscles (the primary motor area) was equal on both sides of the brain during stuttering. In non-stuttered speech, activity was stronger on the left. This suggest that stutterers fail to develop left-brain control of speech, which is the pattern in about 95% of non-stutterers.

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