al., 2005; Klimesch, 1999; Klimesch et al., 2004; Kolev et al., 1997; Makeig et al., 2002; Penny et al., 2002; Schurmann et al., 2001; Shah et al., 2004; Yordanova et al., 2003). Limitations in methodology often make it difficult to disentangle phase resetting from additive evoked responses (Sauseng et al., 2007), and so it is therefore difficult to draw definitive conclusions regarding which of these mechanisms underlies the generation of the ERP1.