The article claims way more than the paper does. It's pretty widely accepted that during sleep, the hippocampus replays patterns of activation that were produc

The article claims way more than the paper does. It's pretty widely accepted that during sleep, the hippocampus replays patterns of activation that were produced during the day. In this case, that means that the rats are essentially traversing the maze in their sleep. However, this is _not_ dreaming. The neural replay activity is seen in humans and animals alike, but it doesn't correspond to the subjective experience of dreaming in humans, AFAIK.