Biasing the content of hippocampal replay during sleep
Open accessAbstract
The hippocampus is essential for encoding self-experienced events into memory. During sleep, neural activity in the hippocampus related to a recent experience has been observed to spontaneously reoccur, and this 'replay' has been postulated to be important for memory consolidation. Task-related cues can enhance memory consolidation when presented during a post-training sleep session, and, if memories are consolidated by hippocampal replay, a specific enhancement for this replay should be observed. To test this, we trained rats on an auditory-spatial association task while recording from neuronal ensembles in the hippocampus. We found that, during sleep, a task-related auditory cue biased reactivation events toward replaying the spatial memory associated with that cue. These results indicate that sleep replay can be manipulated by external stimulation and provide further evidence for the role of hippocampal replay in memory consolidation.
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Repetitive nightmares in PTSD patients do not lead to forgetting of the traumatic event, but are associated with increased severity of the disorder and considered a risk factor in the development of PTSD.
“Finally, repetitive nightmares, which are highly prevalent in patients suffering from posttraumatic stress disorders (PTSD), do not lead to forgetting of the traumatic event, but are rather associated with increased severity of the disorder and considered a risk factor in the development of PTSD (75,1240,1331).”
From About Sleep's Role in Memory (2013) · cites this paper as [75]
The Abstract describes an experiment in rats on auditory cues and hippocampal replay during sleep; the Discussion addresses memory consolidation, not clinical nightmares. Searches for PTSD, repetitive nightmares, trauma, forgetting, severity, and risk factors found no passage addressing the attributed claim. No page numbers were provided in our copy. (LLM, conf=0.76)
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- Authors
- Bendor, D., & Wilson, M. A.
- Affiliations
- Massachusetts Institute of Technology (US)
- Corresponding author
- Bendor, Daniel
- Venue
- Nature Neuroscience
- Published
- 2012-09-02
- Volume
- 15
- Issue
- 10
- Pages
- 1439-1444
- ISSN
- 1097-6256 (ISSN-L)
- 1546-1726
- PMC
- PMC4354843
- OpenAlex
- W2137172397
- Semantic Scholar
- 48bf83e48d99543cb32346bcbb8fd192b69043cd
- Cited by
- 359
- References
- 35
- Citations by year
- 2026: 15 · 2025: 24 · 2024: 27 · 2023: 33 · 2022: 26 · 2021: 17 · 2020: 24 · 2019: 19 · 2018: 30 · 2017: 36 · 2016: 31 · 2015: 21 · 2014: 32 · 2013: 22 · 2012: 2
- FWCI
- 12.62
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- UCL Discovery (University College London) (submittedVersion)
- Funders
- National Institute of Mental Health (R01MH061976)
- National Institute on Deafness and Other Communication Disorders (K99DC012321, 1-K99-DC012321-01)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
- Keywords
- hippocampal replay, sleep, memory consolidation, auditory cues, spatial memory, hippocampal reactivation, external stimulation, neuronal ensembles, rats
- MeSH terms
- Acoustic Stimulation, Action Potentials, Animals, Association Learning, Cues, Hippocampus, Memory, Neurons, Sleep, Rats
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