Focal electrical stimulation as an effective sham control for active rTMS and biofeedback treatments.
Sheffer CE, Mennemeier MS, Landes RD, Dornhoffer J, Kimbrell T, Bickel WK, Brackman S, Chelette KC, Brown G, Vuong M. Focal electrical stimulation as an effective sham control for active rTMS and biofeedback treatments. Appl Psychophysiol Biofeedback. 2013 Sep; 38(3):171-6.