“…When the response is correct, a CRN is observed (Vidal et al., 2000 ). The CRN is less well‐studied, but its amplitude appears to reflect subjective uncertainty in the response correctness (Scheffers & Coles, 2000 ), response strategy evaluation (Bartholow et al., 2005 ), attentional control or effortful vigilance (Matsuhashi et al, 2021 ; van Noordt et al, 2015 , 2016 ), and/or motivation to respond correctly (Imhof & Rüsseler, 2019 ), with a larger (more negative) CRN associated with more uncertainty, suboptimal strategy, greater attention or vigilance, and higher motivation, respectively. The CRN appears to have many properties in common with the ERN, and some evidence indicates that they share a common neural generator in the anterior cingulate (Roger et al., 2010 ); however, others have pointed out that approaches showing a common source use methods that are likely to obscure source differences (Endrass et al., 2012 ), and other methods point to the ERN and CRN having non‐identical neural generators (Endrass et al., 2012 ; Vocat et al., 2008 ), although there is general agreement that both ERN and CRN have a common peak over fronto‐central electrode sites.…”