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. 2020 Apr 10;9(4):1075. doi: 10.3390/jcm9041075

Figure 1.

Figure 1

The transcranial direct current stimulation (tDCS) setup with electrodes positioned according to the 10–20 electroencephalography system. (a) Prefrontal tDCS: the yellow marked areas correspond to the anode and cathode position over the left (F3) and right (F4) dorsolateral prefrontal cortices, respectively. (b,c) Occipital tDCS: the yellow marked areas illustrate the cathode position over the left (O1) or right (O2) occipital cortex; the anode is placed over the contralateral supraorbital area (not shown).