Evaluating Anodal tDCS Preceding Aphasia Therapy


Phase 1/2 Results N/A

Eligibility Criteria

Inclusion Criteria

1. ≥ 18 years of age
2. First single focal unilateral left hemisphere lesion with diagnosis verified by brain imaging (MRI or CT scans) that occurred at least 6 months prior
3. Pre-morbidly right handed
4. Pre-morbidly fluent English speaker
5. Cognitive function sufficient to understand the experiments and follow instructions (per interview with Speech Pathologist)
6. A baseline Aphasia Quotient score between 10 to 94 out of 100 points on the Western Aphasia Battery (neither completely without language comprehension/expression nor fully recovered from aphasia).

Exclusion Criteria

1. Ongoing use of CNS-active medications
2. Ongoing use of psychoactive medications, such as stimulants, antidepressants, and anti-psychotic medications
3. Presence of additional potential tDCS risk factors:
- Damaged skin at the site of stimulation (i.e., skin with ingrown hairs, acne, razor nicks, wounds that have not healed, recent scar tissue, broken skin, etc.)
- Presence of an electrically, magnetically or mechanically activated implant (including cardiac pacemaker), an intracerebral vascular clip, or any other electrically sensitive support system
- Metal in any part of the body, including metal injury to the eye (jewelry must be removed during stimulation)
- A history of medication-resistant epilepsy in the family
- Past history of seizures or unexplained spells of loss of consciousness during the previous 36 months
4. Pregnancy in women, as determined by self-report