Effects of tDCS and tUS on Pain Perception in OA of the Knee

"Subjects will undergo 20 minutes of low-intensity transcranial electrical stimulation of up to 2mA. During active stimulation, the current will be active for the full 20 minutes.~Subjects will also undergo 20 minutes of transcranial ultrasound. During active stimulation, the ultrasound will be active for the full 20 minutes."

"Subjects will undergo 20 minutes of low-intensity transcranial electrical stimulation, as in the active condition; however, during sham stimulation (placebo) the current will not be active for the full 20 minutes.~Subjects will also undergo 20 minutes of transcranial ultrasound in the same par. During active stimulation, the ultrasound will be active for 20 minutes - however, during sham stimulation (placebo) the ultrasound will not be active for the full 20 minutes."