Rats 'dream' paths to a brighter future: When rats rest, their brains simulate journeys to a desired future such as a tasty treat — ScienceDaily Rats ‘dream’ paths to a brighter future: When rats rest, their brains simulate journeys to a desired future such as a tasty treat — ScienceDaily. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)MoreClick to share on Pinterest (Opens in new window)Click to email a link to a friend (Opens in new window)