Dream to Predict? REM Dreaming as Prospective Coding

Frontiers in Psychology
Sue Llewellyn

Abstract

The dream as prediction seems inherently improbable. The bizarre occurrences in dreams never characterize everyday life. Dreams do not come true! But assuming that bizarreness negates expectations may rest on a misunderstanding of how the predictive brain works. In evolutionary terms, the ability to rapidly predict what sensory input implies-through expectations derived from discerning patterns in associated past experiences-would have enhanced fitness and survival. For example, food and water are essential for survival, associating past experiences (to identify location patterns) predicts where they can be found. Similarly, prediction may enable predator identification from what would have been only a fleeting and ambiguous stimulus-without prior expectations. To confront the many challenges associated with natural settings, visual perception is vital for humans (and most mammals) and often responses must be rapid. Predictive coding during wake may, therefore, be based on unconscious imagery so that visual perception is maintained and appropriate motor actions triggered quickly. Speed may also dictate the form of the imagery. Bizarreness, during REM dreaming, may result from a prospective code fusing phenomena with the same me...Continue Reading

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Citations

Aug 27, 2019·Frontiers in Psychology·Andreas Nordin, Pär Bjälkebring
May 31, 2019·Brain : a Journal of Neurology·Célia LacauxDelphine Oudiette
Jul 4, 2020·The Behavioral and Brain Sciences·Antonino Visalli, Nicola Cellini
Aug 14, 2021·Frontiers in Psychology·Marleide da Mota Gomes, Antonio E Nardi

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