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The international 10-20 system of EEG electrode placement. F, frontal, C, central, P, parietal, T, temporal, O, occipital. Right sided placements are indicated by even numbers, left sided placements by odd numbers, and midline placements by Z.

The international 10-20 system of EEG electrode placement. F, frontal, C, central, P, parietal, T, temporal, O, occipital. Right sided placements are indicated by even numbers, left sided placements by odd numbers, and midline placements by Z.