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. Author manuscript; available in PMC: 2019 May 27.
Published in final edited form as: Brain Stimul. 2018 Apr 6;11(4):699–708. doi: 10.1016/j.brs.2018.04.004

Fig. 1. Study design.

Fig. 1.

a) Participant flow diagram of study design. b) Timeline of experimental visit demonstrating stimulation periods and parameters. c) Image of custom ear stimulation electrodes used. d) Ear stimulation targets used; both trials utilized similar targets.