have self-reported unilateral or bilateral knee OA pain, according to American College of Rheumatology criteria

have had knee OA pain in the past 3 months with an average of at least 3 on a 10 cm Visual Analog Scale (VAS) for pain

can speak and read English

have a device with internet access that can be used for secure video conferencing for real-time remote supervision

have access to a distraction-free, well lit, clean environment with a safe area to store the device and device kit

have no plan to change medication regimens for pain throughout the trial

are able to travel to the coordinating center

are willing and able to provide written informed consent prior to enrollment.

Self Transcranial Direct Current Stimulation for Pain in Older Adults With Knee Osteoarthritis