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Disruption of hierarchical predictive coding during sleep

par Strauss, Mélanie ;Sitt, Jacobo D.;King, Jean-Rémi;Elbaz, Maxime;Azizi, Leila;Buiatti, Marco;Naccache, Lionel;van Wassenhove, Virginie;Dehaene, Stanislas
Référence Proceedings of the National Academy of Sciences of the United States of America, 112, 11
Publication Publié, 2015-03

Article révisé par les pairs

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Résumé :

Significance Sleeping disrupts the conscious awareness of external sounds. We investigated the stage of processing at which this disruption occurs. In the awake brain, when a regular sequence of sounds is presented, a hierarchy of brain areas uses the available regularities to predict forthcoming sounds and to respond with a series of “prediction error” signals when these predictions are violated. Using simultaneous recordings of electroencephalography and magnetoencephalography signals, we discovered that both short-term and long-term brain responses to auditory prediction errors are disrupted during non-rapid eye movement and rapid eye movement sleep; however, the brain still exhibits detectable auditory responses and a capacity to habituate to frequently repeated sounds. Thus, sleep appears to selectively affect the brain’s prediction and error detection systems.