“…First, the difference wave approach can remove common underlying components that are insensitive to the win/loss manipulation (Bress, Smith, Foti, Klein, & Hajcak, 2012) and at the same time minimize potential overlaps between the FRN and other ERP components, particularly the P3 (Hajcak, Moser, Holroyd, & Simons, 2007;Holroyd & Krigolson, 2007). Second, we have successfully used the difference approach in relevant studies (e.g., Gu et al, 2016;Zhu, Gu, Wu, & Luo, 2015;Zhu et al, 2018). Thus, we created Bnegative-positive^and Bambiguous-positive^difference waves by subtracting the ERPs on positive outcome trials from the ERPs on negative and ambiguous outcome trials, respectively.…”