AUTHOR=Osorio-Gómez Daniel , Miranda Maria Isabel , Guzmán-Ramos Kioko , Bermúdez-Rattoni Federico TITLE=Transforming experiences: Neurobiology of memory updating/editing JOURNAL=Frontiers in Systems Neuroscience VOLUME=17 YEAR=2023 URL=https://www.frontiersin.org/journals/systems-neuroscience/articles/10.3389/fnsys.2023.1103770 DOI=10.3389/fnsys.2023.1103770 ISSN=1662-5137 ABSTRACT=

Long-term memory is achieved through a consolidation process where structural and molecular changes integrate information into a stable memory. However, environmental conditions constantly change, and organisms must adapt their behavior by updating their memories, providing dynamic flexibility for adaptive responses. Consequently, novel stimulation/experiences can be integrated during memory retrieval; where consolidated memories are updated by a dynamic process after the appearance of a prediction error or by the exposure to new information, generating edited memories. This review will discuss the neurobiological systems involved in memory updating including recognition memory and emotional memories. In this regard, we will review the salient and emotional experiences that promote the gradual shifting from displeasure to pleasure (or vice versa), leading to hedonic or aversive responses, throughout memory updating. Finally, we will discuss evidence regarding memory updating and its potential clinical implication in drug addiction, phobias, and post-traumatic stress disorder.