Home-based Neuromodulation to Target Depression And Memory Symptoms in Older Adults

This is a single arm pilot study to determine safety, feasibility, and preliminary efficacy of a home-based brain stimulation intervention of transcranial direct current stimulation (tDCS) targeting the prefrontal cortex, and transcranial alternating stimulation (tACS) targeting the angular gyrus to improve depressive and episodic memory symptoms in individuals with major depressive disorder (MDD) in the context of dementia. Participants will take part in a series of pre-intervention assessments, the brain stimulation intervention consisting of 20 once-daily 20-minute stimulation sessions given over a period of 4 weeks, and a series of post-intervention assessments (taken immediately after brain stimulation and 3 months after stimulation).