Using tDCS in Speech-based Stroke Rehabilitation

This study is looking at whether combining a type of non-invasive brain stimulation called transcranial direct current stimulation (tDCS) with speech therapy can improve speech after a stroke. tDCS uses a low-intensity electrical current delivered to the scalp. Researchers want to see if this combination helps people with apraxia of speech (difficulty planning and coordinating the movements needed for speech) after a stroke. They will measure changes in speech accuracy from the beginning to six months after treatment. To join, you need to be right-handed, speak only English, have had a single stroke in the left side of your brain at least six months ago, and have a diagnosis of apraxia of speech. The study plans to enroll 24 participants, but its current status is unclear.

Study design
This interventional study will involve 24 participants. Participants will be randomly assigned to different starting times for their treatment phases.
What's involved
Participants will have baseline sessions, followed by treatment phases. Speech accuracy will be recorded at the beginning and six months after treatment.
Compensation
Not stated in the trial record.
Follow-up
Speech accuracy will be measured at six months after treatment.

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NCT03452202

Using tDCS in Speech-based Stroke Rehabilitation

Recruiting
NAAges 18–99InterventionalTreatment
NYU Langone Health
~24 participants
Updated 2026-06-03 on ClinicalTrials.gov
What's tested:Soterix 1x1 line tDCS low-intensity stimulatorSham

At a glance

Recruiting sites
2 of 2 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Change in accuracy in recordings from tasks from baseline to post treatment
Measured over Baseline, 6 Months
Apraxia of Speech
2 sites across 1 states
New York2
  • Adam Buchwald, MD · PRINCIPAL_INVESTIGATOR · NYU Langone Health

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Eligibility criteria

Inclusion

Right-handed
Monolingual (English)
Single left-hemisphere CVA
A minimum of six months post-stroke
Clinical diagnosis of apraxia of speech
Normal speech perception
Passing score on the hearing screening.

Exclusion

Diagnosis of laryngeal voice disorder
Dysarthria
History of speech impairment prior to CVA
Presence of potential tDCS risk factors: damaged skin at site of stimulation;
Presence of electrically or magnetically activated implant (including pacemaker);
metal in any part of their body;
history of medication-resistant epilepsy in the family;
past history of seizures or unexplained spells of loss of consciousness.
  • Change in accuracy in recordings from tasks from baseline to post treatmentBaseline, 6 Months

    Subjects will be given speech production tasks. Recordings of tasks will be scored for accuracy to measure speech motor learning