![]() Yet, as we shall see, encouraging progress has been made in relating the phenomenology of dreams to underlying brain activity, and to studies of brain damage and development.įunctional neuroanatomy of human REM sleep: a meta-analysis of PET results to focus on properties of all dreams rather than to investigate the neural correlates of a particular dream. Therefore, it is difficult to predict the contents of specific dreams, and most modern dream research tries to relate neuronal activity retrospectively to dream form rather than dream content, i.e. ![]() The study of dreams is a formidable task, because dream consciousness is only accessible via report rather than direct observation ( Box 1) and because it is difficult to manipulate dream content experimentally, whether by exposure to stimuli before or during sleep. In The interpretation of dreams Freud predicted that “Deeper research will one day trace the path further and discover an organic basis for the mental event.” Recent work, which we review in this article, begins to fulfill Freud s prediction. Although dreams have fascinated us since the dawn of time, their rigorous, scientific study is a recent development ( Supplementary Fig.
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