Effects of tDCS Versus HD-tDCS for Stroke Rehabilitation

Phase 1

Completed

• Conditions: Chronic Aphasia
• Interventions: Device: HD-tDCS (Soterix); Device: Transcranial Direct Current Stimulation (Neuroconn)

• Registration Number: NCT01651884
• Lead Sponsor: Soterix Medical

Brief Summary

The purpose of this study is to assess the changes in language processing of patients with chronic aphasia after receiving non-invasive brain stimulation.Previous research using traditional transcranial direct current stimulation (tDCS) using 2 sponge electrodes has shown that persons with aphasia show more improvement after treatment when that treatment is accompanied by brain stimulation. Traditional tDCS has recently been modified to deliver current to more specific locations in the brain. This new delivery method is called high-definition tDCS (HD-tDCS). It is not known whether traditional tDCS (more diffuse current delivery) or HD-tDCS (more focal current delivery) will be the better approach for enhancing treatment outcomes. To answer this question, computerized speech-language treatment will be administered during the application of the different forms of brain stimulation.

Detailed Description

Not available

Study Timeline

• Study Start: 2012-03
• Study First Submitted: 2012-07-19
• Study First Submitted QC: 2012-07-26
• Study First Posted: 2012-07-27
• Primary Completion: 2012-12
• Study Completion: 2013-01
• Status Verified: 2015-08
• Last Update Submitted: 2015-08-25
• Last Update Posted: 2015-08-26

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: Not specified

Inclusion Criteria

1. one-time ischemic stroke in the left hemisphere
2. greater than 6-months post-stroke onset
3. between 25 and 80 years of age
4. aphasia diagnosis (as determined by pre-treatment language-based testing)
5. right-handed (before the stroke)
6. native speaker of English
7. ability to provide informed written or verbal consent

Exclusion Criteria

1. clinically reported history of dementia, alcohol abuse, psychiatric disorder, traumatic brain injury, or extensive visual acuity or visual-spatial problems
2. factors contraindicative of tDCS administration (sensitive scalp, previous brain surgery)
3. prior history of epileptic or unprovoked seizures occurring during the previous 12 months.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
High-Definition tDCS	HD-tDCS (Soterix)	-
Sponge tDCS	Transcranial Direct Current Stimulation (Neuroconn)	-