Peak frequencies over posterior electrodes (P3, Pz, P4, O1, Oz, and O2) were significantly higher than peak frequencies over frontal electrodes (F3, Fz, F4, C3, Cz, and C4; all t s ≥ 2.52, all p s ≤ 0.046, all d s ≥ 0.63 h , FDR corrected for multiple comparisons; with the exception of the comparisons between C3 and P4 ( t (15) = 2.12, p = 0.09, d = 0.53 h ) and Cz and P4 ( t (15) = 2.36, p = 0.06, d = 0.59 h ), which were marginally significant).
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