The Multifunctionality of Dreaming and the Oblivious Avatar-A Commentary on Antti Revonsuo and Colleagues1 Introduction2 Sleep physiology and the function of dreaming3 Dream function 1: Memory consolidation and integration 4 Dream function 2: Emotion regulation5 Dream function 3: Creativity and problem solving6 Dream function 4: Preparation and simulation of waking life7 The multifunctionality of dreaming8 The oblivious avatar9 Conclusion