1. To examine the effect of a two-week tDCS intervention of 3 months of continued tDCS intervention versus 3 months of receiving a placebo treatment (dummy). On the costs of performing an action task (dual task cost) walking speed, cognitive measures and motor function. 2. To examine whether the effects of tDCS build up over time by creating a delayed start mechanism in the intervention (delayed-start design) 3. Examining mechanical and neuroplastic effects of tDCS intervention 4. To examine the response to tDCS over time
Age 65-90
Cognitive complaints
A positive answer to the question "Do you feel you have more problems than most people?"
A negative answer to the question "Is your thinking as clear and sharp as it was before?"
Less than eight years of study
dementia
According to the clinical definition clinical dementia rationing (CDR) score 1 or higher
Previous diagnosis