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. Author manuscript; available in PMC: 2015 Aug 7.
Published in final edited form as: Cogn Affect Behav Neurosci. 2014 Jun;14(2):792–804. doi: 10.3758/s13415-013-0219-x

Figure 2.

Figure 2

Event-related potentials time-locked to the onset of the Sternberg probe item, as a function of Task (single, dual), Electrode (six midline electrodes), Probe (old, new), and Group (controls, PTSD). The ERP old/new effect – the positive shift for previously presented (old) probes that are correctly recognized, relative to new probes that are correctly rejected – was observed beginning at 300 ms for both groups in the single-task condition, but only for the controls in the dual-task condition.