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Sensory Training to Treat Focal Dystonia

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00006336
Recruitment Status : Completed
First Posted : October 5, 2000
Last Update Posted : March 4, 2008
Information provided by:
National Institutes of Health Clinical Center (CC)

Brief Summary:

This study will examine the effectiveness of Braille reading as a sensory training program for improving symptoms of focal (localized) dystonia, a movement disorder caused by sustained muscle contractions. Musicians, writers, typists, athletes and others whose work involves frequent repetitive movements may develop focal dystonia of the hand. Dystonia patients have an impaired sense of touch, and it is thought that symptoms may improve with sensory tactile (touch) training.

Patients with task-specific dystonia and healthy normal volunteers may be eligible for this 8-week study. Patients will undergo evaluation of their dystonia and a complete neurologic examination. Healthy volunteers will have a complete physical examination.

On the first day of the study, after 4 weeks and after 8 weeks, all participants will have a gap detection test for sensory perception testing. The test uses eight plastic devices called JVP-Domes with ridges of different widths on the surface. The subject's arm and hand are held in palm-up position and the right index finger is tested for about 1 second 20 times with each dome. The subject is asked to report whether the direction of the dome is vertical or horizontal. The test takes about 30 minutes. Patients with dystonia will also have a their symptoms evaluated at these visits. The evaluation involves completing a written questionnaire and writing a paragraph.

All participants will be trained in Braille reading at NIH. Sessions will be given every day the first week, twice a week the second and third weeks, and once a week the following weeks.

Condition or disease
Dystonic Disorder

Detailed Description:
It has been hypothesized that dystonia may be a sensory disorder. Animal studies as well as physiological studies of patients with focal dystonia have demonstrated sensory dysfunction. It has also been shown that patients with dystonia have impaired sensory perception including when assessed with the JVP gap detection test. This could possibly result from enlargement and dedifferentiation of representations in the sensory cortex. We therefore hypothesize that sensory training could improve the impaired sensory perception and hence improve the dystonia. This study will examine if Braille reading as a sensory training program can correct the sensory perception and the dystonia. The primary outcome is improvement in the JVP gap detection test.

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Study Type : Observational
Enrollment : 22 participants
Official Title: Sensory Training for Treatment of Focal Dystonia
Study Start Date : September 2000
Study Completion Date : November 2001

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Patients with idiopathic task specific dystonia and healthy normal volunteers.

Patients must not be receiving botulinum-toxin treatment or other medications for the past three months prior to entering the study.

Patients must be able to keep their hand in a pronated 'reading' position for one hour.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00006336

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United States, Maryland
National Institute of Neurological Disorders and Stroke (NINDS)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Institute of Neurological Disorders and Stroke (NINDS)
Layout table for additonal information Identifier: NCT00006336    
Other Study ID Numbers: 000227
First Posted: October 5, 2000    Key Record Dates
Last Update Posted: March 4, 2008
Last Verified: November 2001
Keywords provided by National Institutes of Health Clinical Center (CC):
Gap Detection Test
Visual Analog and Verbal Scale
Writing Standard Paragraph
Braille Reading Grade I
Additional relevant MeSH terms:
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Dystonic Disorders
Neurologic Manifestations
Nervous System Diseases
Movement Disorders
Central Nervous System Diseases