Mechanisms of memory stabilization: are consolidation and reconsolidation similar or distinct processes?
Abstract
Consolidation of new memories depends on a crucial phase of protein synthesis. It is widely held that, once consolidated, memories are stable and resilient to disruption. However, established memories become labile when recalled and require another phase of protein synthesis to be maintained. Therefore, it has been proposed that when a memory is reactivated it must undergo additional consolidation (reconsolidation) to persist. To determine whether reconsolidation recapitulates consolidation, in the past few years several groups have investigated whether the same molecules and pathways mediate the formation of a memory and its maintenance after reactivation. At first glance, the results appear conflicting: although both processes appear to engage the same molecules and mechanisms, brain areas involved in consolidation after initial training are not required for reconsolidation. In addition, the formation of a memory and its maintenance after reactivation seem to have distinctive temporal molecular requirements. This review concludes with a working model that could explain the apparent controversy of memory vulnerability after reactivation.
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In the authors' large sample, the number of fast spindles showed a positive but rather small correlation with short-term recall of pictures tested after 10 min.
“In accordance with previous studies, the number of fast spindles (13)(14)(15) showed a positive (but rather small) correlation with short-term recall (tested after 10 min) of pictures.”
From About Sleep's Role in Memory (2013) · cites this paper as [14]
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- Authors
- Alberini, C. M.
- Affiliations
- Icahn School of Medicine at Mount Sinai (US)
- Corresponding author
- Alberini, Cristina M.
- Venue
- Trends in Neurosciences
- Publisher
- Elsevier BV
- Published
- 2005-01
- Volume
- 28
- Issue
- 1
- Pages
- 51-56
- ISSN
- 0166-2236 (ISSN-L)
- OpenAlex
- W2145186621
- Cited by
- 594
- References
- 4
- Citations by year
- 2026: 12 · 2025: 19 · 2024: 20 · 2023: 16 · 2022: 11 · 2021: 18 · 2020: 17 · 2019: 15 · 2018: 24 · 2017: 27 · 2016: 33 · 2015: 28 · 2014: 37 · 2013: 48 · 2012: 40
- FWCI
- 2.22
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Trends in Neurosciences (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Keywords
- memory consolidation, memory reconsolidation, memory stabilization, memory reactivation, protein synthesis, memory maintenance
- MeSH terms
- Animals, Brain, Humans, Memory, Models, Neurological, Neurons, Protein Biosynthesis
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