The areas of your brain determine whether you are a high or low dream recaller. High dream recallers tend to have more spontaneous brain activity in their temporiparietal junction and their medial prefrontal cortex.
"The sleeping brain is not capable of memorizing new information; it needs to be awake to do that" said Perrine Ryby. His statement explains why high dream recallers have more times of wakefulness. Not only do the dreamers differ in recall, they also differ in their dream production.