By contrast, many default network regions that had shown increased activity during remembering the past and imagining the future in previous studies (e.g., medial temporal lobe, medial prefrontal cortex, retrosplenial cortex) did not show preferential activation when thinking about taking walks in the past and future tasks as compared with the present moment. Although interpretation of these findings depends critically on the extent to which the training given to participants indeed allowed them to remain in the present moment during the mental walk task, they suggest that only some regions are specifically related to chron- esthesia or mental time travel (for related evidence, see Arzy et al., 2008, 2009).