Abstract
For over a hundred years, the predominant view of how the brain stores new memories suggested that a consolidation process stabilizes memories over time until they are fixed in the brain. However, in contradiction to this assumption, there has accumulated a significant amount of empirical demonstrations showing that memories, or parts of them, need to be restabilized after their expression in a manner analogous to the initial stabilization process. This process is now called reconsolidation. These findings have generated a great deal of excitement but have also provoked considerable criticism. In this paper, I will address the issues and controversies surrounding reconsolidation, restating the accepted neurobiological framework of memory consolidation and discussing the empirical evidence for the existence of a consolidation period. Applying the same standards used by proponents of the memory consolidation account to infer the existence of the memory consolidation processes, I will conclude that a reconsolidation process must exist as well.
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Acknowledgements
This work was supported by the Canadian Institutes of Health Research; Natural Sciences and Engineering Research Council of Canada; Canadian Foundation for Innovation; and The Volkswagen, and EJLB Foundation grants. The author is a William Dawson chair Alfred P. Sloan Fellow, EJLB Scholar, and Canadian Institutes of Health Research New Investigator. My thanks to the “Fondation des Treilles” that supported me for part of the duration it took to write this manuscript. My deep thanks to Olli Hardt for his invaluable help in the discussion and preparation of the manuscript and for challenging me to make the manuscript better. My thanks to Cathy Rankin and Paul Frankland, Evan Balaban and Joseph LeDoux for their comments on this manuscript.
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Nader, K. A single standard for memory; the case for reconsolidation. Debates in Neuroscience 1, 2–16 (2007). https://doi.org/10.1007/s11559-007-9005-7
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DOI: https://doi.org/10.1007/s11559-007-9005-7