8 studies were found.

1.		Recruiting	Ultrasound Evaluation of Tongue Movements in Speech and Swallowing Conditions: Otorhinolaryngologic Disease; Otorhinolaryngologic Neoplasm; Pharyngeal Neoplasm; Polymyositis; Speech Disorder
2.		Recruiting	Characteristics of Idiopathic Familial Speech Disorders Conditions: Developmental Articulation Disorder; Speech Disorder; Stuttering
3.		Recruiting	Role of the Right Brain in Recovery of Language Function in Chronic Stroke Conditions: Aphasia; Cerebrovascular Accident
4.		Recruiting	Dopamine Function in Developmental Stuttering Condition: Developmental Stuttering
5.		Recruiting	Genetic Studies of Tone Deafness Conditions: Healthy; Tone Deafness
6.		Recruiting	Study of Brain Activity during Speech Production and Speech Perception Conditions: Developmental Articulation Disorder; Stuttering
7.		Recruiting	Genetic Linkage Studies of Stuttering Condition: Stuttering
8.		Recruiting	Central Mechanisms in Speech Motor Control Studied with H215O PET Conditions: Communication Disorder; Healthy; Stuttering; Tourette Syndrome; Voice Disorder