Evidence map›Paper›PMID 33165618›Full record

ArticleSleep2021

Spindles are highly heritable as identified by different spindle detectors.

Jennifer R Goldschmied, Karine Lacourse, Greg Maislin, Jacques Delfrate, Philip Gehrman, Frances M Pack, Bethany Staley, Allan I Pack, Magdy Younes, Samuel T Kuna and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Sleep, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

19 citing papers in PubMed, 29 citations in OpenAlex.

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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

11 authors at 4 institutions in 2 countries.

Jennifer R GoldschmiedDepartment of Psychiatry, University of Pennsylvania, Philadelphia, PA.
Karine LacourseCenter for Advanced Research in Sleep Medicine, Centre de Recherche de l'Hôpital du Sacré-Cœur de Montréal, QC, Canada.
Greg MaislinDivision of Sleep Medicine/Department of Medicine, University of Pennsylvania, Philadelphia, PA.
Jacques DelfrateCenter for Advanced Research in Sleep Medicine, Centre de Recherche de l'Hôpital du Sacré-Cœur de Montréal, QC, Canada.
Philip GehrmanDepartment of Psychiatry, University of Pennsylvania, Philadelphia, PA.
Frances M PackDivision of Sleep Medicine/Department of Medicine, University of Pennsylvania, Philadelphia, PA.
Bethany StaleyDivision of Sleep Medicine/Department of Medicine, University of Pennsylvania, Philadelphia, PA.
Allan I PackDivision of Sleep Medicine/Department of Medicine, University of Pennsylvania, Philadelphia, PA.
Magdy YounesYRT Ltd, Winnipeg, Manitoba, Canada.
Samuel T KunaDivision of Sleep Medicine/Department of Medicine, University of Pennsylvania, Philadelphia, PA.
Simon C WarbyCenter for Advanced Research in Sleep Medicine, Centre de Recherche de l'Hôpital du Sacré-Cœur de Montréal, QC, Canada.
University of Pennsylvania · USHôpital du Sacré-Cœur de Montréal · CAPhiladelphia VA Medical Center · USResearch Manitoba · CA

Funding

Understanding the relationship between obesity and tongue fat in humans and ratsP01HL094307 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI SCHWAB, RICHARD J. · 2009 to 2020
$23.7M
SCOR IN NEUROBIOLOGY SLEEP AND SLEEP APNEAP50HL060287 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI PACK, ALLAN IAN · 1998 to 2007
$17.2M
Investigating the Role of Slow-wave Activity as a Marker of Impaired Plasticity in Major Depressive DisorderK23MH118580 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI GOLDSCHMIED, JENNIFER RACHEL · 2019 to 2022
$732k
CIHRNHLBI NIH HHS P01 HL094307NHLBI NIH HHS P50 HL060287NIMH NIH HHS K23 MH118580
6 · The paper itself

Abstract

STUDY

objectivesSleep spindles, a defining feature of stage N2 sleep, are maximal at central electrodes and are found in the frequency range of the electroencephalogram (EEG) (sigma 11-16 Hz) that is known to be heritable. However, relatively little is known about the heritability of spindles. Two recent studies investigating the heritability of spindles reported moderate heritability, but with conflicting results depending on scalp location and spindle type. The present study aimed to definitively assess the heritability of sleep spindle characteristics.

methodsWe utilized the polysomnography data of 58 monozygotic and 40 dizygotic same-sex twin pairs to identify heritable characteristics of spindles at C3/C4 in stage N2 sleep including density, duration, peak-to-peak amplitude, and oscillation frequency. We implemented and tested a variety of spindle detection algorithms and used two complementary methods of estimating trait heritability.

resultsWe found robust evidence to support strong heritability of spindles regardless of detector method (h2 > 0.8). However not all spindle characteristics were equally heritable, and each spindle detection method produced a different pattern of results.

conclusionsThe sleep spindle in stage N2 sleep is highly heritable, but the heritability differs for individual spindle characteristics and depends on the spindle detector used for analysis.

Indexed as

ElectroencephalographySleep StagesAlgorithmsPolysomnographySleepgeneticsheritabilityspindlespindle detection

Identifiers

PMID33165618
PMCPMC8033448
OpenAlexW3098160509

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.