Participants were given extensive training in performing the key tasks and the authors tried to equate the tasks for mental contents—they took place in the same setting and did not involve interactions with other people in an attempt to isolate brain activity associated with chronesthesia by contrasting the remembering and imagining tasks with the mental walk task. Nyberg et al. (2010) reported that left lateral parietal cortex, as well as left frontal cortex, cerebellum, and thalamus were preferentially engaged as participants thought about taking walks in the past or future as compared to taking the same walk in the present moment.