Modulating Brain Activity to Improve Goal-directed Physical Activity in Older Adults

Exclusion Criteria

• •An inability to ambulate without the assistance of another person (canes or walkers allowed)
• •Self-report of physician-diagnosed dementia, more than moderate cognitive impairment defined as a Montreal Cognitive Assessment (MoCA) score \<21, or an inability to understand the study protocol as determined by study staff
• •A clinical history of stroke, Parkinson's disease or parkinsonian syndromes, multiple sclerosis, normal pressure hydrocephalus or other movement disorder affecting gait
• •Any report of severe lower-extremity arthritis or physician-diagnosis of peripheral neuropathy
• •Use of antipsychotics, anti-seizure, benzodiazepines, or other neuroactive medications
• •Severe depression defined by a Geriatric Depression Scale score greater than 11
• •Any report or physician-diagnosis of schizophrenia, bipolar disorder or other psychiatric illness
• •Any unstable medical condition
• •Resting systolic blood pressure is higher than 180 mmHg
• •Contraindications tor tDCS, including reported seizure within the past two years, use of neuro-active drugs, self-reported presence of specific implanted medical devices (e.g., deep brain stimulator, medication infusion pump, cochlear implant, pacemaker, etc.), or the presence of any active dermatological condition, such as eczema, on the scalp