[Glenn.]

Originally Posted by Niamh.

What is the purpose of dreams, do you think?

Dreams Get Rid of Emotional Arousal

It has been agreed for some time that dreams deal with emotion. However, not all emotion causes dreaming. Only emotional arousal unexpressed while awake causes us to dream. So, for example, if you have a screaming row with your partner you are unlikely to dream about it as the emotional arousal was allowed full expression. However if you become angry with someone at work but cannot express it then this frustration will probably be played out during dreaming.

(This gives us an indication why dreams and hypnosis are interlinked.)
How Do Dreams Work?

The brain will 'flush out' emotional arousal by creating a dream of a scenario that parallels the real-life experience - a metaphor. So, the work colleague from above might be symbolised by a monster and your anger would be allowed expression as you attacked the dream creature.

If you ruminate angrily over the same issues the next day then you may well have a repetitive dream as the brain solves the same problem in the same way.

Apparently