Dreaming is the condition where the parts of your brain required to form memories, and to have consciousness are active enough to participate and take part in w

Dreaming is the condition where the parts of your brain required to form memories, and to have consciousness are active enough to participate and take part in what the other awake parts of your brain are doing while the sleeping parts like sensory input and motor control are shut down. We already know the brain creates an active predictive model of the world that is what we experience, so it makes sense the brain can continue creating that model when asleep and untethered from sense input.