The neural substrate for dreaming: Is it a subsystem of the default network?

► Content analysis studies reveal many parallels between dreaming and waking cognition. ► Lesion and imaging studies converge on the same neural substrate for dreaming. ► The neural substrate underlying dreaming has many overlaps with the default network. ► This shared neural substrate includes many cognitive processing regions. ► Dreaming and mind wandering may make use of the same simulation processes.