97 studies were found. Here are studies 1 to 50.

1.		Recruiting	Brain Tissue Collection for Neuropathological Studies Conditions: Bipolar Disorder; Huntington Disease; Schizophrenia; Tourette Syndrome; Dementia
2.		Recruiting	Magnetic Resonance Imaging (MRI) of Neuropsychiatric Patients and Healthy Volunteers Conditions: Healthy; Mental Disorder; Parkinson's Disease; Schizophrenia
3.		Recruiting	Central Mechanisms in Speech Motor Control Studied with H215O PET Conditions: Communication Disorder; Healthy; Stuttering; Tourette Syndrome; Voice Disorder
4.		Completed	Dextroethorphan for the Treatment of Parkinson's Disease and Similar Conditions of the Nervous System Conditions: Neurodegenerative Disease; Parkinson's Disease
5.		Recruiting	Diagnosis and Natural History Study of Patients with Neurological Conditions Conditions: Alzheimer's Disease; Dementia; Movement Disorder; Multiple System Atrophy; Parkinson's Disease
6.		Recruiting	Genetic Analysis of Parkinson's Disease Condition: Parkinson's Disease
7.		No longer recruiting	Gene Analysis of Parkinson's Disease Condition: Parkinson's Disease
8.		Completed	Transcranial Magnetic Stimulation for the Treatment of Parkinson's Disease Conditions: Movement Disorders; Parkinson Disease
9.		Completed	I-123 Brain Studies of Serotonin Metabolism in Psychiatric Patients and Normal Volunteers Conditions: Healthy; Mental Disorder; Obsessive Compulsive Disorder; Schizophrenia; Tourette Syndrome
10.		Completed	Effects of Brain Stimulation on Learning and Reasoning Conditions: Cerebellar Disease; Dementia; Healthy; Parkinson's Disease
11.		Completed	Intravenous Levodopa for the Diagnosis of Parkinson's Disease Condition: Parkinson Disease
12.		Completed	Treatment of Parkinson's Disease with Eliprodil Conditions: Movement Disorders; Parkinson Disease
13.		Completed	Treatment of Huntington's Chorea with Amantadine Conditions: Chorea; Huntington's Disease
14.		Completed	Treatment of Parkinson's Disease with a Transdermal Skin Patch Condition: Parkinson Disease
15.		Completed	Developmental Phenomenology of Obsessive Compulsive Disorder and Tourette Syndrome in Children and Adolescents Conditions: Tourette Syndrome; Obsessive Compulsive Disorder
16.		Completed	Study of the Neurobiology of Tourette Syndrome and Related Disorders Conditions: Tourette Syndrome; Obsessive Compulsive Disorder
17.		Completed	Study of Zinc for Wilson Disease Condition: Wilson Disease
18.		Completed	Study of Tetrathiomolybdate in Patients With Wilson Disease Condition: Wilson Disease
19.		Completed	Phase III Randomized, Double-Blind, Placebo-Controlled Study of Guanfacine for Tourette Syndrome and Attention Deficit Hyperactivity Disorder Condition: Tourette Syndrome
20.		Completed	Phase II Double Blind Controlled Trial of Nigral Grafting in Patients With Parkinson's Disease Condition: Parkinson Disease
21.		Completed	Phase II Double Blind Placebo Controlled Trial of Risperidone in Tourette Syndrome Condition: Tourette Syndrome
22.		No longer recruiting	Randomized Study of Pergolide in Children with Tourette Syndrome Condition: Tourette Syndrome
23.		No longer recruiting	Randomized Study of the Effects of Glucose on Cognition in Healthy Young and Elderly People and Parkinson's Disease Patients Condition: Parkinson Disease
24.		Recruiting	Droxidopa in Treating Patients With Neurogenic Hypotension Conditions: Shy-Drager Syndrome; Orthostatic Hypotension
25.		Recruiting	Evaluation and Follow-up of Individuals with Obsessive-Compulsive Disorder and Related Conditions Conditions: Anorexia Nervosa; Obsessive Compulsive Disorder; Tourette Syndrome; Trichotillomania
26.		Recruiting	Magnetic Resonance Imaging (MRI) of Neuropsychiatric Patients and Healthy Volunteers Conditions: Bipolar Disorder; Healthy; Mood Disorder; Parkinson's Disease; Schizophrenia
27.		Completed	Study of LY300164 for the Treatment of Parkinson's Disease Conditions: Dyskinesias; Parkinson Disease
28.		Completed	Phase II Pilot Controlled Study of Short vs Longer Term Pimozide (Orap) Therapy in Tourette Syndrome Condition: Tourette Syndrome
29.		Completed	Phase II Study of Pallidotomy for Parkinson Disease Condition: Parkinson Disease
30.		Completed	Parkinson's disease treatment with coenzyme Q10 Condition: Parkinson's Disease
31.		Completed	Timing of levodopa treatment in Parkinson's disease Condition: Parkinson's Disease
32.		Completed	Long-Term Study of Cerebral Glucose Metabolism in Huntington's Disease Condition: Huntington's Disease
33.		Completed	Study of Axial Mobility Exercises in Parkinson Disease Condition: Parkinson Disease
34.		No longer recruiting	Study of Clozapine for the Treatment of Psychosis in Patients with Idiopathic Parkinson's Disease Condition: Parkinson Disease
35.		No longer recruiting	Randomized Study of Fetal Neurotransplantation for the Treatment of Parkinson's Disease Condition: Parkinson Disease
36.		Recruiting	Continuously Infused Recombinant-Methionyl Human Glial Cell Line-Derived Neurotrophic Factor (GDNF) to Treat Progressive Supranuclear Palsy Condition: Progressive Supranuclear Palsy
37.		Completed	Effects of Monoamine Reuptake Inhibitor NS2330 in Parkinson's Disease Condition: Parkinson's Disease
38.		Completed	KW-6002 to Treat Parkinson's Disease Condition: Parkinson's Disease
39.		Completed	Continuously Infused Intracerebral (IC) Recombinant-Methionyl Human Glial Cell Line-Derived Neurotrophic Factor (r-metHuGDNF) for the Treatment of Idiopathic Parkinson's Disease Condition: Parkinson Disease
40.		Completed	EMD 128130 for the Treatment of Parkinson's Disease Condition: Parkinson's Disease
41.		No longer recruiting	Riluzole to Treat Parkinson's Disease Condition: Parkinson's Disease
42.		Recruiting	The Association of Neurotoxin Exposure with Parkinson's Disease and Parkinsonism in World War II Veterans and Other Men Condition: Parkinson's Disease
43.		Completed	Transcranial Magnetic Stimulation in Parkinson's Disease Conditions: Parkinson Disease; Healthy
44.		Recruiting	PET Scanning in Parkinson's Disease Condition: Parkinson Disease
45.		Recruiting	Brain Activation in Vocal and Motor Tics Conditions: Tourette's Syndrome; Chronic Motor Tic Disorder; Chronic Motor Vocal Disorder
46.		Completed	Effect of Stimulus Rate on Cognitive and Motor Activity in Young Subjects, Elderly Subjects, and Patients with Parkinson's Disease Condition: Parkinson Disease
47.		No longer recruiting	Creatine Therapy for Huntington's Disease Condition: Huntington's Disease
48.		Recruiting	Magnetic Stimulation for Parkinson Disease Conditions: Parkinson's Disease; Depression
49.		Recruiting	Study of Repetitive Transcranial Magnetic Stimulation in Parkinson's Disease Condition: Parkinson Disease
50.		No longer recruiting	Chinese Exercise Modalities in Parkinson's Disease Condition: Parkinson Disease