- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03929432
Treatment Outcomes With tDCS in Post-Stroke Aphasia
Treatment Outcomes and Brain Mechanisms Associated With Non-Invasive Neuromodulation in Post-Stroke Aphasia
Study Overview
Status
Conditions
Detailed Description
Aphasia is a language impairment that commonly occurs following brain damage (e.g., stroke). While language rehabilitation can yield improved language functioning, treatment outcomes vary greatly across individuals. In chronic aphasia, language gains occur through the brain's inherent ability to reorganize (i.e., neuroplasticity).
While Speech-language therapy (SLT) can target various language skills and modalities, the most pervasive deficit across all persons with aphasia (PWA) is difficulty with word finding. Thus, aphasia treatment often includes some form of intervention focused on improving naming abilities. As with language function in general, naming abilities in PWA seems to be associated with left hemisphere recruitment, particularly with the viable tissue at the rim of the lesion (perilesional areas). This project investigates an innovative approach to improving current therapy by examining the benefits of using excitatory transcranial direct current stimulation (tDCS) stimulation/neuromodulation during anomia treatment (i.e. word-finding treatment).
This study investigates an innovative approach to improving current therapy by examining the benefits of using excitatory tDCS stimulation/neuromodulation during anomia treatment. This project will provide novel mechanistic understanding of changes in functional brain connectivity in persons with post-stroke aphasia and how connectivity relates to treatment outcomes.
The aims of this study are as follows:
Aim 1. To investigate the benefits of using broad transcranial direct current stimulation (tDCS) to improve word retrieval in persons with aphasia (PWA). Aim 2. To study functional brain changes related to this treatment. Aim 3. To examine behavioral and neural re-organization correlates related to treatment outcomes.
All participants will complete the following 3 components: (1) Baseline Assessment, (2) Interventions (i.e., SLT with active tDCS & sham tDCS , and (3) Outcome Testing (i.e., Behavioral & Brain Imaging). During the first week, each participant will complete all of the Neuropsychological Testing Battery and the first round of the outcome measures as pre-testing before starting SLT. Then the participant will complete 2 weeks of SLT accompanied with either active tDCS or sham tDCS. Once the SLT is completed, the participant will complete round 2 of outcome testing (i.e., post-testing for 1st SLT phase and pre-testing for 2nd SLT phase). Then, the participant will complete another 2 weeks of SLT but with the other tDCS condition. Once SLT is completed, the participant will complete round 3 of outcome testing (i.e., post-testing for 2nd SLT phase). Lastly, the participant will complete round 4 of outcome testing (i.e., follow-up)
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Dana Moser, PhD, CCC-SLP
- Phone Number: 501-569-8914
- Email: DRMoser@uams.edu
Study Contact Backup
- Name: Portia Carr
- Phone Number: 501-569-3155
- Email: PSCarr@uams.edu
Study Locations
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Arkansas
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Little Rock, Arkansas, United States, 72205
- Recruiting
- University of Arkansas for Medical Sciences
-
Contact:
- Dana Moser, PhD, CCC-SLP
- Phone Number: 501-603-1011
- Email: DRMoser@uams.edu
-
Contact:
- Portia Carr
- Phone Number: 501-569-3155
- Email: PCarr@uams.edu
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Principal Investigator:
- Dana Moser, PhD, CCC-SLP
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Presence of post-stroke aphasia
- Single left hemisphere stroke etiology
- At least 6 months post-stroke
- Age range between 18 and 80 years old
- Speak English as a native language
- Adequate hearing and vision to complete the tasks
Exclusion Criteria:
- Severe auditory comprehension deficits (determined by pretest) (i.e., global aphasia, Wernicke's aphasia, transcortical sensory aphasia)
- Inability to provide informed consent
- Co-occurring history of neurological disease/disorder/injury (e.g., traumatic brain injury, right hemisphere stroke, dementia)
- Co-occurring history of a major mental illness (e.g., schizophrenia, drug addiction, bipolar)
- Clinical conditions contraindicated for MRI or tDCS (e.g., implanted electrical devices, claustrophobia, seizure disorder)
- Positive pregnancy test (for females)
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 |
---|---|
Active Comparator: Active tDCS (with Speech-Language Treatment)
tDCS Stimulation Dose: 1.5 mA for 20-mins
|
Soterix Medical 1×1 transcranial Direct Current Stimulator for Clinical Trials (1x1 tDCS-CT). Excitatory stimulation to the left hemisphere will be achieved through a 1x1 montage utilizing two carbon-rubber electrodes and 5x7 EASY pad sponges (A-tDCS [excitatory]left target; C-tDCS [inhibitory]right hemisphere). Each PWA will have a unique 5-digit tDCS program code for each treatment phase. One code will instruct the 1x1 tDCS-CT to administer active stimulation as describe above (i.e., 1.5 mA for 20 min). The other will administer 1.5 mA for only a few seconds to simulate active stimulation. SLT will consist of Semantic Feature Analysis, Phonological Component Analysis, and Verb Network Strengthening Treatment |
Sham Comparator: Sham tDCS (with Speech-Language Treatment)
No tDCS stimulation
|
Control condition in which only SLT is administered.Participant receives 1.5 mA for only a few seconds to simulate active stimulation, then the stimulation will cease.
SLT will consist of Semantic Feature Analysis, Phonological Component Analysis, and Verb Network Strengthening Treatment
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in correct naming of nouns on Philadelphia Naming Test.
Time Frame: Immediately after 1st and 2nd treatment phases and at 10 follow up after study completion
|
Naming gains for untreated items.
|
Immediately after 1st and 2nd treatment phases and at 10 follow up after study completion
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in correct naming of verbs on Action Naming Test
Time Frame: Immediately after 1st and 2nd treatment phases and at 10 follow up after study completion
|
Naming gains for untreated items.
|
Immediately after 1st and 2nd treatment phases and at 10 follow up after study completion
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Dana Moser, PhD, CCC-SLP, University of Arkansas
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
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
Additional Relevant MeSH Terms
Other Study ID Numbers
- 207342
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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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