Evidence map›Paper›PMID 34025484›Full record

ArticleFrontiers in psychiatry2021

Alterations of Subcortical Brain Structures in Paradoxical and Psychophysiological Insomnia Disorder.

Farnoosh Emamian, Mostafa Mahdipour, Khadijeh Noori, Masoumeh Rostampour, S Bentolhoda Mousavi, Habibolah Khazaie, Mohammadreza Khodaie-Ardakani, Masoud Tahmasian, Mojtaba Zarei

Open access · goldAbstract read
In one paragraph

Article in Frontiers in psychiatry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% of its field
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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
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  7. Review
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  20. Sleep Dysfunction and Grey Matter Volume.Current neurology and neuroscience reports · 2022
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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

9 authors at 3 institutions in 1 country.

Farnoosh EmamianDepartment of Psychiatry, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Mostafa MahdipourInstitute of Medical Science and Technology, Shahid Beheshti University, Tehran, Iran.
Khadijeh NooriSleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Masoumeh RostampourSleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
S Bentolhoda MousaviPsychosis Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Habibolah KhazaieSleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Mohammadreza Khodaie-ArdakaniDepartment of Psychiatry, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Masoud TahmasianInstitute of Medical Science and Technology, Shahid Beheshti University, Tehran, Iran.
Mojtaba ZareiInstitute of Medical Science and Technology, Shahid Beheshti University, Tehran, Iran.
Kermanshah University of Medical Sciences · IRShahid Beheshti University · IRUniversity of Social Welfare and Rehabilitation Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Insomnia disorder (ID) is a common illness associated with mood and cognitive impairments. Subtyping ID is an ongoing debate in sleep medicine, but the underlying mechanisms of each subtype is poorly understood. Growing evidence suggests that subcortical brain structures play the key roles in pathophysiology of ID and its subtypes. Here, we aimed to investigate structural alteration of subcortical regions in patients with two common ID subtypes i.e., paradoxical and psychophysiological insomnia. Fifty-five patients and 49 healthy controls were recruited for this study and T1-weighted images and subjective and objective sleep parameters (i.e., Pittsburgh Sleep Quality Index and polysomnography) were collected from participants. Subcortical structures including the hippocampus, amygdala, caudate, putamen, globus pallidus, nucleus accumbens, and thalamus were automatically segmented in FSL. Volume and shape (using surface vertices) of each structure were compared between the groups, controlled for covariates, and corrected for multiple comparisons. In addition, correlations of sleep parameters and surface vertices or volumes were calculated. The caudate's volume was smaller in patients than controls. Compared with controls, we found regional shrinkage in the caudate, nucleus accumbens, posterior putamen, hippocampus, thalamus, and amygdala in paradoxical insomnia and shrinkage in the amygdala, caudate, hippocampus, and putamen in psychophysiological insomnia. Interestingly, comparing two patients groups, shape alteration in the caudate, putamen, and nucleus accumbens in paradoxical insomnia and shrinkage in the thalamus, amygdala, and hippocampus in psychophysiological insomnia were observed. Both subjective and objective sleep parameters were associated with these regional shape alterations in patients. Our results support the differential role of subcortical brain structures in pathophysiology of paradoxical and psychophysiological insomnia.

Indexed as

gray matter volumeinsomnia disorderparadoxical insomniapsychophysiological insomniashape analysissubcortical brain structures

Identifiers

PMID34025484
PMCPMC8139557
OpenAlexW3162478028

What OpenQuestion holds

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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.