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Improved Language Acquisition With Levodopa

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: NCT00103805
Recruitment Status : Completed
First Posted : February 15, 2005
Last Update Posted : May 21, 2014
Information provided by:
University Hospital Muenster

Brief Summary:
The purpose of this study is to determine whether the non-daily administration of levodopa is effective in boosting semantic language acquisition in healthy subjects.

Condition or disease Intervention/treatment Phase
Healthy Drug: levodopa Phase 4

Detailed Description:

Our prior work using a between-subject design shows that daily administration of d-amphetamine or the dopamine precursor levodopa over the course of five days markedly improves word learning success in healthy subjects. In this randomized, placebo-controlled, double-blind clinical trial, we probe whether the effect can be replicated using a within-subject design, with administration of levodopa and placebo on alternate days for a total period of 10 days.

The expected scientific results will strengthen the basis for transferring neuromodulatory interventions from the laboratory to stroke patients with language dysfunctions. Because of the heterogeneity of stroke patients, only a within-subject design can be used to probe the effects of pharmacological adjuncts to language therapy.

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Study Type : Interventional  (Clinical Trial)
Enrollment : 20 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double
Primary Purpose: Treatment
Official Title: Improved Language Acquisition With Levodopa
Study Start Date : March 2003
Actual Primary Completion Date : August 2005
Actual Study Completion Date : August 2005

Resource links provided by the National Library of Medicine

Drug Information available for: Levodopa

Primary Outcome Measures :
  1. Boost in language learning success through levodopa compared to placebo

Secondary Outcome Measures :
  1. Stability of language learning success after one month

Information from the National Library of Medicine

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Ages Eligible for Study:   20 Years to 35 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy subjects
  • 20-35 years old
  • Right handedness

Exclusion Criteria:

  • Neurological/psychiatric/metabolic/cardiac disorders
  • Asthma
  • Known allergic reactions to one of the experimental drugs
  • Other drugs affecting the central nervous system
  • Leisure drug ingestion during the past 4 weeks (urine test)
  • Smoking cessation during the past 2 weeks
  • > 6 cups of coffee or energy drinks per day
  • > 10 cigarettes per day
  • > 50 grams of alcohol per day

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): NCT00103805

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Dept. of Neurology, University Hospital Muenster
Muenster, Nordrhein-Westfalen, Germany, 48129
Sponsors and Collaborators
University Hospital Muenster
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Study Director: Caterina Breitenstein, PhD Dept. of Neurology, University of Muenster, Germany
Study Chair: Stefan Knecht, MD Dept. of Neurology, University of Muenster, Germany

Additional Information:
Layout table for additonal information Identifier: NCT00103805    
Other Study ID Numbers: KS-LD_01
First Posted: February 15, 2005    Key Record Dates
Last Update Posted: May 21, 2014
Last Verified: May 2014
Keywords provided by University Hospital Muenster:
language acquisition
stroke recovery
associative learning
Additional relevant MeSH terms:
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Antiparkinson Agents
Anti-Dyskinesia Agents
Dopamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs