Evidence map›Paper›PMID 41376842›Full record

ReviewNeurobiology of sleep and circadian rhythms2026

Neuroimaging findings in sleep disorders: A review article.

Ali Kavehee, Fatemeh Kashaninasab, Mir Farhad Ghalehbandi, Mahboobeh Khoozan

Abstract readReview
In one paragraph

Review in Neurobiology of sleep and circadian rhythms, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Review
  2. 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

4 authors.

Ali KaveheeFaculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Fatemeh KashaninasabPsychiatric Department, Rasoul Akram Medical Complex Clinical Research Development Center (RCRDC), Iran University of Medical Sciences (IUMS), Tehran, Iran.
Mir Farhad GhalehbandiMental Health Research Center, Psychosocial Health Research Institute, Department of Psychiatry, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran.
Mahboobeh KhoozanMental Health Research Center, Department of Psychiatry, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: Sleep disorders including insomnia, obstructive sleep apnea (OSA), narcolepsy and REM sleep behavior disorder (RBD), significantly impair cognition, emotional wellbeing and physical health. This review synthesizes Neuroimaging evidence across major sleep disorders. It also documents knowledge gaps in the literature and provides clear next steps towards better diagnostic and therapeutic steps for sleep disorders. Methods: PRISMA 2020 guidelines were followed for the systematic review of Neuroimaging studies on sleep disorders, with a comprehensive search of PubMed, Scopus and Google Scholar between 1997 and 2024. Results: A total of 93 Neuroimaging studies published between 1997 and 2024 were systematically reviewed. Insomnia is characterized by reduced gray matter volume in the prefrontal cortex and hippocampus, increased beta activity in EEG, and decreased frontal lobe metabolism, supporting the hyperarousal model. OSA is associated with cortical thinning, hippocampal atrophy, and disrupted Default Mode Network (DMN) connectivity, correlating with cognitive deficits. Narcolepsy exhibits hypothalamic atrophy, reduced orexin signaling, and abnormal thalamocortical connectivity, explaining excessive daytime sleepiness and cataplexy. Parasomnias, particularly REM sleep behavior disorder (RBD), show neurodegenerative changes in the brainstem and basal ganglia, serving as early markers for synucleinopathies like Parkinson's disease. Conclusion: Multimodal Neuroimaging and electrophysiological findings provide critical insights into the pathophysiology of sleep disorders, highlighting distinct neural patterns that enhance diagnostic precision and guide targeted interventions. Multimodal imaging approaches are essential for advancing precision medicine in sleep disorder management.

Indexed as

CTEEGInsomniaMRIMultimodal imagingNarcolepsyNeuroimagingObstructive sleep apneaParasomniasPETSleep disorders

Identifiers

PMID41376842
PMCPMC12688700

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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.