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. 2020 Sep 15;31(2):809–825. doi: 10.1093/cercor/bhaa259

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© The Author(s) 2020. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Electrical neuroimaging results: Training by Session interaction. (A) Exemplar group-average ERPs for correct NoGo trials in the older adults Go/NoGo and 2-back training groups for the pre- and post-training sessions. (B and C) Results of the GFP (B) and of the GMD topographic (C) training by session interaction revealed a sustained significant GFP but not topographic interaction during the P3 ERP component. The topographies of the ERP averaged over the period of GFP modulation are represented nasion upward for the four experimental conditions. (D) Source estimation analyses over the period of interest defined in the analyses in the sensor space. The plots represent the means (bold circle), medians, first and third quartiles (horizontal bars), and minimal–maximal values (whiskers) of the current densities at the clusters’ local maxima (i.e., the solution points with the lowest P-value) showing the training by session interaction. SMA: supplementary motor area; PMC: premotor cortex; IFG: inferior frontal gyrus; ^*P < 0.05, ^*^*P < 0.01, ^*^*^*P < 0.001.