Sumientra Rampersad is an Assistant Professor of Physics at UMass Boston and a Visiting Assistant Research Professor of Electrical and Computer Engineering at Northeastern University. Dr. Rampersad directs the Brain Stimulation & Simulation Lab (BSS Lab), which has locations at UMass and Northeastern. The BSS Lab focuses on researching cognitive function in health and disease, and how this can be influenced by electric neuromodulation. Research methods include experimental studies with adult volunteers and simulations of stimulation-induced electric fields using computational head models.