Inclusion Criteria:

• Age 18 years of age or greater
• At least 3 months after ischemic/hemorrhagic/anoxic stroke or 3 months after completion of cranial radiation or cranial surgery for treatment of primary or metastatic intracranial tumors or III) neurodegenerative conditions include, but are 
• not limited to, primary progressive aphasia, corticobasal syndrome, progressive supranuclear palsy, Parkinson’s disease, and Alzheimer’s disease dementia.
• Expected survival >6 months
• Functional impairment in the domains of language and/orcognition affecting quality of life determined by PI.

Exclusion Criteria:

• Pregnancy
• Contraindication to tDCS, including metallic implanted objects.
• Medical instability or inability to cooperate during the study as assessed by the treating physician to participate in the study.

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 09/24/2024. Questions regarding updates should be directed to the study team contact.