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. 2020 Sep 5;6(9):e04250. doi: 10.1016/j.heliyon.2020.e04250

Figure 1.

Figure 1

The International 10–20 System. The first letters of each label denote the region of the brain over which each electrode should be positioned: Fp – pre-frontal, F – frontal, C – central, P – parietal, O – occipital, T – temporal.