- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03272906
Clinical Feasibility of Transcranial Direct Current Stimulation [tDCS] With Standard Aphasia Therapy
Study Overview
Status
Detailed Description
Baseline Behavioral Assessment: Medical and neurological history will be taken. Western Aphasia Battery-Revised, Communication Activities of Daily Living-2, and Philadelphia Naming Test (short form) will be administered. Narrative will be elicited (Cinderella story). Some of these procedures will be videorecorded for later transcription. Subjects will also complete a pre-tDCS safety screening questionnaire.
tDCS: Participants will undergo placement of 2 tDCS electrodes. For all subjects, the anodal electrode will be placed at the following locations (EEG 10-20 system):
(i) over the left inferior frontal gyrus (crossing point between T3-Fz and F7-Cz)
The cathodal electrode will be placed at the second site:
(ii) over right frontal pole (Fp2)
Two types of stimulation will be given, an active condition and a sham condition. In the sham condition, stimulation is ramped up over the first 30 seconds (as in the active condition), but then discontinued. This gives the physical perception of stimulation without the modulatory effects.
Stimulation will be delivered by a tDCS device with the following parameters for intensity and duration:
- Intensity: 2 mA
- Duration: 20 minutes
tDCS will be provided for the first 20 minutes of each aphasia therapy session provided at the LSU Speech-Language-Hearing Clinic. The therapy sessions last for one hour and are provided twice weekly for 8 weeks over the course of an academic semester (fall and spring).
Post-Therapy/Stimulation Assessment: Western Aphasia Battery-Revised, Communication Activities of Daily Living-2, and Philadelphia Naming Test (short form) will be administered as before therapy. Cinderella narrative will again be elicited. Some of these procedures will again be videorecorded for later transcription. A tDCS sensations survey will also be completed at the final assessment to determine the effectiveness of blinding.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
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Louisiana
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Baton Rouge, Louisiana, United States, 70803
- Louisiana State University
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Single, unilateral stroke resulting in aphasia
- Competency to provide written informed consent
- Ability to participate in standard aphasia therapy
Exclusion Criteria:
- Serious psychological condition
- Serious neurological condition, other than stroke
- Serious medical condition
- Pregnancy
- History of seizures
- Presence of electronic or metal implants (e.g., pacemaker, vagal nerve stimulator, etc.).
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: A-tDCS & speech-language therapy
Anodal transcranial direct current stimulation (2 mA) plus speech-language therapy for 16 sessions (20-minutes per each 60-minute treatment session) over the course of 8 weeks.
The electrical current will be administered over ventral inferior frontal gyrus.
The stimulation will be delivered at an intensity of 2mA for a maximum of 20 minutes.
|
2 mA of A-tDCS stimulation is induced between two 5 cm x 7 cm saline soaked sponges where one sponge (anode: A-tDCS) is placed on the scalp over the targeted cortical region.
Ramping up of the current to 2 mA occurs over 30 seconds to allow participants to habituate to the tingling sensation.
A-tDCS stimulation will be active only in the first 20 minutes of the 60-minute treatment session.
Other Names:
Therapy tasks will be determined by the clinician on an individualized basis and will not be affected by this research protocol.
The only difference between the clinical therapy that is normally provided in the clinic and this research paradigm is the application of tDCS electrodes during therapy.
Therapist is blinded to stimulation type.
Other Names:
|
Sham Comparator: Sham-tDCS & speech-language therapy
Sham transcranial direct current stimulation (2 mA) plus speech-language therapy for 16 sessions (20-minutes per each 60-minute treatment session) over the course of 8 weeks.
Electrodes will be placed as in A-tDCS.
Current will be ramped up for the first 30 seconds following which the intensity will drop to 0 mA.
|
Therapy tasks will be determined by the clinician on an individualized basis and will not be affected by this research protocol.
The only difference between the clinical therapy that is normally provided in the clinic and this research paradigm is the application of tDCS electrodes during therapy.
Therapist is blinded to stimulation type.
Other Names:
2 mA of A-tDCS stimulation is induced between two 5 cm x 7 cm saline soaked sponges where one sponge (anode: A-tDCS) is placed on the scalp over the targeted cortical region.
Ramping up of the current to 2 mA occurs over 30 seconds to allow participants to habituate to the tingling sensation.
Then, the current will be ramped back down to 0 mA in the sham condition.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Production of Correct Information Units (CIUs) in Cinderella narrative
Time Frame: Following 8 weeks of speech-language therapy
|
Change in CIU production over treatment interval.
Words are counted as CIUs if they are novel, intelligible, and appropriate in context
|
Following 8 weeks of speech-language therapy
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Western Aphasia Battery-Revised (WAB-R)
Time Frame: Following 8 weeks of speech-language therapy
|
Change in performance on Part 1 of WAB-R (Aphasia Quotient)
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Following 8 weeks of speech-language therapy
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Communication Activities of Daily Living-2 (CADL-2)
Time Frame: Following 8 weeks of speech-language therapy
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Change in performance on CADL-2
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Following 8 weeks of speech-language therapy
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Philadelphia Naming Test - Short Form (PNT)
Time Frame: Following 8 weeks of speech-language therapy
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Change in performance on PNT
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Following 8 weeks of speech-language therapy
|
Collaborators and Investigators
Investigators
- Principal Investigator: E. Susan Duncan, PhD, CCC-SLP, Lousiana State University
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- LEQSF(2017-20)-RD-A-03
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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