Do our dreams make sense?

"I dreamed that I was flying surrounded by unicorns and that all of a sudden my sister appeared, snapped her fingers and made me fall ... what can that mean?" To this question, no psychiatrist, psychologist or neurologist can answer the risk of indulging in a fanciful interpretation. "Currently with what we know about what happens in sleep, interpreting someone's dreams is really astrology," laughs Dr. Isabelle Arnulf, neurologist, director of the sleep pathology unit at the Pitié Salpêtrière hospital.

Read also: How brain explorers go after our dreams

And yet dreams have always fascinated humans, sometimes conferring esoteric and religious functions (communication with the deceased, spirits, gods and deities ...), sometimes symbolic and introspective (as in Artemidore de Daldis, Syrian philosopher of 1st century BC author of Onirocritique, la Clé des Songes) . Long confined to popular beliefs and divination,

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