Temporally graded requirement for protein synthesis following memory reactivation
Open accessAbstract
Learning of new information is transformed into long-lasting memory through a process known as consolidation, which requires protein synthesis. Classical theory held that once consolidated, memory was insensitive to disruption. However, old memories that are insensitive to protein synthesis inhibitors can become vulnerable if they are recalled (reactivated). These findings led to a new hypothesis that when an old memory is reactivated, it again becomes labile and, similar to a newly formed memory, requires a process of reconsolidation in order to be maintained. Here, we show that the requirement for protein synthesis of a reactivated memory is evident only when the memory is recent. In fact, memory vulnerability decreases as the time between the original training and the recall increases.
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Early observations suggested that memories older than 14 days did not destabilise.
“Early observations suggested that memories older than 14 days did not destabilise (Milekic and Alberini, 2002).”
From Retrieval-Dependent Mechanisms Affecting Emotional Memory Persistence: Reconsolidation, Extinction, and the Space in Between (2020) · cites this paper as Milekic and Alberini, 2002
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“suggested that memories older than 14 days did not destabilise (Milekic and Alberini, 2002).”
Background
- Authors
- Milekic, M. H., & Alberini, C. M.
- Affiliations
- Icahn School of Medicine at Mount Sinai (US)
- Corresponding author
- Alberini, Cristina M
- ORCID
- Alberini, Cristina M
- Venue
- Neuron
- Publisher
- Elsevier BV
- Published
- 2002-10
- Volume
- 36
- Issue
- 3
- Pages
- 521-525
- ISSN
- 0896-6273 (ISSN-L)
- OpenAlex
- W2061233919
- Cited by
- 455
- References
- 2
- Citations by year
- 2026: 7 · 2025: 5 · 2024: 10 · 2023: 10 · 2022: 21 · 2021: 16 · 2020: 21 · 2019: 12 · 2018: 18 · 2017: 20 · 2016: 24 · 2015: 18 · 2014: 30 · 2013: 31 · 2012: 24
- FWCI
- 8.51
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Neuron (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institute of Mental Health (MH 65635)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Keywords
- memory reconsolidation, memory reactivation, protein synthesis, memory consolidation, memory vulnerability, memory retrieval, protein synthesis inhibitors
- MeSH terms
- Amygdala, Animals, Anisomycin, Brain, Hippocampus, Learning, Male, Memory, Memory Disorders, Nerve Tissue Proteins, Neural Pathways, Synaptic Transmission, Protein Synthesis Inhibitors, Reaction Time, Synapses, Time Factors, Rats, Long-Evans, Rats
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