Why does the brain remember dreams?

[Northerner]

Some people recall a dream every morning, whereas others rarely recall one. In a new study, research shows that the temporo-parietal junction, an information-processing hub in the brain, is more active in high dream recallers. Increased activity in this brain region might facilitate attention orienting toward external stimuli and promote intrasleep wakefulness, thereby facilitating the encoding of dreams in memory.

http://www.sciencedaily.com/releases/2014/02/140217085915.htm