Longitudinal Study Examining At-Home Transcranial Direct Current Stimulation

In the past decade, several studies have noted that the application of transcranial direct current stimulation (tDCS) when applied to the scalp of a person with dementia, as they completed a training task in a particular domain, can lead to improved performance on that task (liu, Rau, Gallagher, Rajji, Lanctot, & Hermann, 2017). In our own lab, we have also seen improvements in response to the application of TdCS. For example, we found that applying transcranial direct current stimulation (tDCS) to people with dementia led to an improvement in naming ability (Roncero, Kniefel, Service, Thiel, Probst, & Chertkow, 2017). Recently, we have initiated additional studies in domains such as executive function and memory. These studies remain in progress, but participants have again shown improvement, and the improvement is noted by the families. Some of the participants who completed a tDCS study in our lab are so impressed by the results that they have approached us about the purchase of their own tDCS machine. Some of these participants have even tried medication in the past and report tDCS is more effective. Because tDCS machines are commercially available, these individuals could in theory go about buying their own machines at their own initiative; however, participants would prefer our assistance obtaining a machine and be trained on how to administer tDCS at home.

Proposed Study We will assist participants obtain their own tDCS machine, we have decided to do so in the form of a longitudinal study. More specifically, we plan to assist participants obtain their own machine and train them on the administration of tDCS, but will also collect longitudinal data from them. We will obtain monthly reports that will allow us to monitor whether stimulation remains effective and the general condition of the participant for at least two years.