Enhancing Slow Wave Sleep in Depression

The goal of this pilot study is to determine if non-invasive brain stimulation during sleep can increase deep sleep in adults with depression. It will also determine if increased deep sleep improves cognitive performance and mood ratings. Participants will be asked to wear a non-invasive device that records their brain activity and delivers transcranial electrical stimulation during sleep. Participants will also wear an actigraphy watch that measures activity levels throughout the study. In addition, participants will complete several cognitive assessments and mood and sleep questionnaires throughout the study.