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. Author manuscript; available in PMC: 2018 Jun 12.
Published in final edited form as: Brain Stimul. 2017 Dec 29;11(3):465–480. doi: 10.1016/j.brs.2017.12.008

Fig. 1. Common tDCS/tACS montages and corresponding simulated electric field distribution.

Fig. 1

A. M1-SO configuration: Sponge electrodes, one over left primary motor cortex, one over the contralateral supraorbital ridge. B. Bilateral dorsolateral prefrontal cortex configuration: Sponge electrodes over the F3 and F4 EEG sites. C. 4 × 1 HD-tDCS M1 configuration: High-definition electrodes, one over M1, four return electrodes surrounding the center electrode. The electric field was simulated with a current amplitude of 1 mA. Electric field simulation was performed using SimNIBS 2.0.1 [191].