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. 2015 Sep 24;9:374. doi: 10.3389/fncel.2015.00374

Figure 3.

Figure 3

Difference in performance between the evening and morning sessions, when data from subjects performing under 60% in the training session of either sham or active stimulation session are retrospectively removed. Data from Marshall et al. (2006) shown for comparison. Error bars denote SEM.