“…Seven studies (Malhi et al, 2007; Deckersbach et al, 2008; Drapier et al, 2008; Thermenos et al, 2010; Bertocci et al, 2011; Mullin et al, 2012; Pomarol-Clotet et al, 2014) also applied functional magnetic resonance imaging (fMRI) to measure brain activity. In relation to the cognitive instruments, 16 studies used span tasks (Malhi et al, 2007; Thompson et al, 2007; Barrett et al, 2008; Dittman et al, 2008; Roiser et al, 2009; Liu et al, 2010; Levy et al, 2011; Gruber et al, 2013; Lee et al, 2013; Miguélez-Pan et al, 2014; Russo et al, 2014; Bauer et al, 2015; Gvirts et al, 2015; McCormack et al, 2015; Muhtadie and Johnson, 2015; Sabater et al, 2016), and six studies chose n-back tasks (Deckersbach et al, 2008; Drapier et al, 2008; Thermenos et al, 2010; Bertocci et al, 2011; Mullin et al, 2012; Pomarol-Clotet et al, 2014), with two of them using the modified EFNBACK instrument. Only one article used a supra span task, the yes/no recognition memory test, based in verbal directed-forgetting paradigm.…”