Evidence map›Paper›PMID 33785642›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2021

Longitudinal Analysis of Sleep Spindle Maturation from Childhood through Late Adolescence.

Zoey Y Zhang, Ian G Campbell, Pari Dhayagude, Harrison C Espino, Irwin Feinberg

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Precision sleep signatures to predict mental health outcomes in youth.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Sleep Spindle Abnormalities in Preschool Children With Autism Spectrum Disability: Insights From Nap Polysomnography.Autism research : official journal of the International Society for Autism Research · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Sleep Across the Lifespan: A Neurobehavioral Perspective.Current sleep medicine reports · 2025
    Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Age-associated sleep spindle characteristics in Duchenne muscular dystrophy.Sleep advances : a journal of the Sleep Research Society · 2024
    Article
  19. Article
  20. 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

5 authors at 1 institution in 1 country.

Zoey Y ZhangDepartment of Psychiatry and Behavioral Sciences, University of California Davis, Sacramento, California 95817.
Ian G CampbellDepartment of Psychiatry and Behavioral Sciences, University of California Davis, Sacramento, California 95817 igcampbell@ucdavis.edu.
Pari DhayagudeDepartment of Psychiatry and Behavioral Sciences, University of California Davis, Sacramento, California 95817.
Harrison C EspinoDepartment of Computer Science, University of California Davis, Davis, California 95616.
Irwin FeinbergDepartment of Psychiatry and Behavioral Sciences, University of California Davis, Sacramento, California 95817.
University of California, Davis · US

Funding

Longitudinal Measurements of Sleep EEG in AdolescenceR01MH062521 · NIMH · UNIVERSITY OF CALIFORNIA DAVIS · PI FEINBERG, IRWIN · 2002 to 2012
$4.8M
Longitudinal Measurement of the Changing Sleep Need in AdolescenceR01HL116490 · NHLBI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI CAMPBELL, IAN G · 2013 to 2021
$4.5M
NHLBI NIH HHS R01 HL116490NIMH NIH HHS R01 MH062521
6 · The paper itself

Abstract

Sleep spindles are intermittent bursts of 11-15 Hz EEG waves that occur during non-rapid eye movement sleep. Spindles are believed to help maintain sleep and to play a role in sleep-dependent memory consolidation. Here we applied an automated sleep spindle detection program to our large longitudinal sleep EEG dataset (98 human subjects, 6-18 years old, >2000 uninterrupted nights) to evaluate maturational trends in spindle wave frequency, density, amplitude, and duration. This large dataset enabled us to apply nonlinear as well as linear age models, thereby extending the findings of prior cross-sectional studies that used linear models. We found that spindle wave frequency increased with remarkable linearity across the age range. Central spindle density increased nonlinearly to a peak at age 15.1 years. Central spindle wave amplitude declined in a sigmoidal pattern with the age of fastest decline at 13.5 years. Spindle duration decreased linearly with age. Of the four measures, only spindle amplitude showed a sex difference in dynamics such that the age of most rapid decline in females preceded that in males by 1.4 years. This amplitude pattern, including the sex difference in timing, paralleled the maturational pattern for δ (1-4 Hz) wave power. We interpret these age-related changes in spindle characteristics as indicators of maturation of thalamocortical circuits and changes in sleep depth. These robust age-effects could facilitate the search for cognitive-behavioral correlates of spindle waveforms and might also help guide basic research on EEG mechanisms and postnatal brain maturation.

Indexed as

AdolescentAgingChildChild, PreschoolCross-Sectional StudiesElectroencephalographyFemaleHumansLinear ModelsLongitudinal StudiesMaleMemory ConsolidationPolysomnographySex CharacteristicsSleep StagesadolescenceEEGlongitudinalmaturationsleep spindle

Identifiers

PMID33785642
PMCPMC8143202
OpenAlexW3143096238

What Socratic 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 Socratic graph.