Evidence map›Paper›PMID 40399753›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2025

Slow wave synchrony during NREM sleep tracks cognitive impairment in prodromal Alzheimer's disease.

Omer Sharon, Vladislav Zhelezniakov, Yael Gat, Rotem Falach, Darya Narbayev, Tamara Shiner, Matthew P Walker, Riva Tauman, Noa Bregman, Yuval Nir

Abstract read
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed.

  1. Article
  2. Are infraslow oscillations the missing link between sleep and Alzheimer's?Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  3. Article
  4. Implication of the thalamus in sleep alterations observed in Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Slow wave synchrony during NREM sleep tracks cognitive impairment in prodromal Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Omer SharonCenter for Human Sleep Science, Department of Psychology, University of California, Berkeley, Berkeley, California, USA.ORCID 0000-0003-1403-380X
Vladislav ZhelezniakovDepartment of Physiology & Pharmacology, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.
Yael GatDepartment of Physiology & Pharmacology, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.
Rotem FalachDepartment of Physiology & Pharmacology, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.
Darya NarbayevDepartment of Physiology & Pharmacology, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.
Tamara ShinerCognitive Neurology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
Matthew P WalkerCenter for Human Sleep Science, Department of Psychology, University of California, Berkeley, Berkeley, California, USA.
Riva TaumanFaculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.
Noa BregmanCognitive Neurology Unit, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
Yuval NirDepartment of Physiology & Pharmacology, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.

Funding

European Research Council ERC-2019-CoG 864353Glenn Foundation for Medical Research
6 · The paper itself

Abstract

introductionAlzheimer's disease (AD) disrupts human sleep architecture more severely than normal aging. However, it remains unclear how AD changes oscillatory neural activity during sleep, and whether such changes foreshadow cognitive decline in AD.

methodsWe used high-density electroencephalography sleep recordings in 55 participants: (1) 21 healthy older adults, (2) 28 patients with amnestic mild cognitive impairment (aMCI)-a prodromal AD stage, and (3) 6 AD patients.

resultsCognitive performance robustly decreases with the slow wave (SW) trough amplitude and its synchronization across broad frontocentral cortical areas. Thus, across the AD spectrum, slow wave synchrony declines with cognition, as in normal aging, but at an accelerated pace. Moreover, delayed rapid eye movement (REM) sleep onset in aMCI and AD patients was associated with deficient SW activity, suggesting insufficiently restorative non-REM sleep. DISCUSSION: These findings suggest that impaired slow waves are closely linked to cognitive impairment and mark disrupted neural activity in AD progression. HIGHLIGHTS: Detailed analysis of high-density sleep electroencephalography was performed in amnestic mild cognitive impairment and Alzheimer's disease (AD) patients. Cognitive status robustly correlates with slow wave trough and its cortical spread. Delayed rapid eye movement sleep onset associated with AD correlates with diminished slow wave troughs. Impaired slow waves mark progressively disrupted neural activity in prodromal AD.

Indexed as

Alzheimer DiseaseCognitive DysfunctionSleep, Slow-WaveAgedAged, 80 and overElectroencephalographyFemaleHumansMaleMiddle AgedNeuropsychological TestsProdromal Symptomsamnestic mild cognitive impairmentelectroencephalographymemorymild cognitive impairmentneurodegenerationslow oscillationslow wave

Identifiers

PMID40399753
PMCPMC12094885

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.