Shining a Light on the Mechanisms of Sleep for Memory Consolidation
Open accessAbstract
Purpose of review: This paper reviews all optogenetic studies that directly test various sleep states, traits, and circuit-level activity profiles for the consolidation of different learning tasks. Recent findings: Inhibiting or exciting neurons involved either in the production of sleep states or in the encoding and consolidation of memories reveals sleep states and traits that are essential for memory. REM sleep, NREM sleep, and the N2 transition to REM (characterized by sleep spindles) are integral to memory consolidation. Neural activity during sharp-wave ripples, slow oscillations, theta waves, and spindles are the mediators of this process. Summary: These studies lend strong support to the hypothesis that sleep is essential to the consolidation of memories from the hippocampus and the consolidation of motor learning which does not necessarily involve the hippocampus. Future research can further probe the types of memory dependent on sleep-related traits and on the neurotransmitters and neuromodulators required.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The primary candidate mechanism for sleep's memory benefit is an iterative reactivation and strengthening of recently formed memory networks in the sleeping brain.
“The primary candidate mechanism for this effect is an iterative reactivation and strengthening of recently formed memory networks in the sleeping brain [13, 15–17].”
From Constructive episodic simulation in dreams (2022) · cites this paper as [15]
The citation lists haven’t been fetched yet
References 63 · Cited by 15
- Authors
- Frazer, M. A., Cabrera, Y., Guthrie, R. S., & Poe, G. R.
- Affiliations
- University of California, Los Angeles (US)
- Corresponding author
- Poe, Gina R.
- Venue
- Current Sleep Medicine Reports
- Published
- 2021-07-15
- Volume
- 7
- Issue
- 4
- Pages
- 221-231
- ISSN
- 2198-6401 (ISSN-L)
- OpenAlex
- W3177639600
- Cited by
- 15
- References
- 63
- Citations by year
- 2026: 6 · 2025: 2 · 2024: 2 · 2023: 1 · 2022: 4
- FWCI
- 0.92
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Current Sleep Medicine Reports (publishedVersion, cc-by)
- Funders
- National Institute of Mental Health (60670)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Keywords
- sleep, memory consolidation, optogenetics, REM sleep, NREM sleep, sleep spindles, sharp-wave ripples, slow oscillations, theta oscillations, hippocampus, motor learning, sleep states, neural circuits
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
