Two components of the default network (adapted from Hassabis et al. 2007a). (A) A selection of sagittal, coronal and axial views of the “scene construction” subnetwork overlaid on “glass brain” and structural images (p < .001). This network includes the hippocampus, parahippocampal gyrus, retrosplenial and posterior parietal cortices and medial PFC, and supports the generation and maintenance of a complex and coherent scene or event. (B) Real memories are usually more self-relevant and familiar than imagined experiences. When these two types of simulation were directly contrasted in a well-controlled fMRI paradigm the precuneus, posterior cingulate cortex, and anterior medial PFC were found to be preferentially engaged for real memories (see also D’Argembeau et al. 2010b). This network is often referred to as the “self-reflection” network (Johnson et al. 2002).