on past and future events, autobiographical, social or emotional functions; Amodio & Frith 2006; Buckner et al., 2008; Gusnard et al., 2001; Schacter et al., 2007). In the absence of explicit task demands (i.e., “at rest”), intrinsic activity in the TPN and DMN fluctuate in a temporally anti-correlated fashion (Fox et al., 2005), such that decreased activity in one coincides with increased activity in the other2, suggesting they subserve opposing cognitive processes competing for limited processing resources (Fransson, 2006).
