Evidence map›Paper›PMID 34923132›Full record

ArticleNeuroImage2022

Stability of spectral estimates in resting-state magnetoencephalography: Recommendations for minimal data duration with neuroanatomical specificity.

Alex I Wiesman, Jason da Silva Castanheira, Sylvain Baillet

Abstract read
In one paragraph

Article in NeuroImage, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 2 pooled it
–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

50 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Tracking electrophysiological signatures of Alzheimer's disease: a systematic review of multimodal studies.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Pooled it
  2. Pooled it
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  6. Hierarchical Flows of Human Cortical Activity.bioRxiv : the preprint server for biology · 2026
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  7. Review
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  14. Aperiodic Activity Reflects Pathologic Waveform Shapes in Focal Epilepsy.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  15. Article
  16. Article
  17. Cortical Effects of Dopamine Replacement Account for Clinical Response Variability in Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
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  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

3 authors.

Alex I WiesmanMcConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal QC, Canada. Electronic address: alexander.wiesman@mail.mcgill.ca.
Jason da Silva CastanheiraMcConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal QC, Canada.
Sylvain BailletMcConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal QC, Canada.

Funding

BrainStorm: Highly Extensible Software for Advanced Electrophysiology and MEG/EEG ImagingR01EB026299 · NIBIB · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LEAHY, RICHARD M · 2018 to 2025
$5.4M
Characterizing the interaction between neural attention and somato-motor systems in non-demented patients with Parkinson's diseaseF32NS119375 · NINDS · MCGILL UNIVERSITY · PI WIESMAN, ALEX I · 2020 to 2023
$205k
Biotechnology and Biological Sciences Research Council BB/H008217/1NIBIB NIH HHS R01 EB026299NINDS NIH HHS F32 NS119375
6 · The paper itself

Abstract

The principle of resting-state paradigms is appealing and practical for collecting data from impaired patients and special populations, especially if data collection times can be minimized. To achieve this goal, researchers need to ensure estimated signal features of interest are robust. In electro- and magnetoencephalography (EEG, MEG) we are not aware of any studies of the minimal length of data required to yield a robust one-session snapshot of the frequency-spectrum derivatives that are typically used to characterize the complex dynamics of the brain's resting-state. We aimed to fill this knowledge gap by studying the stability of common spectral measures of resting-state MEG source time series obtained from large samples of single-session recordings from shared data repositories featuring different recording conditions and instrument technologies (OMEGA: N = 107; Cam-CAN: N = 50). We discovered that the rhythmic and arrhythmic spectral properties of intrinsic brain activity can be robustly estimated in most cortical regions when derived from relatively short segments of 30-s to 120-s of resting-state data, regardless of instrument technology and resting-state paradigm. Using an adapted leave-one-out approach and Bayesian analysis, we also provide evidence that the stability of spectral features over time is unaffected by age, sex, handedness, and general cognitive function. In summary, short MEG sessions are sufficient to yield robust estimates of frequency-defined brain activity during resting-state. This study may help guide future empirical designs in the field, particularly when recording times need to be minimized, such as with patient or special populations.

Indexed as

AdultAgedBayes TheoremBrain MappingDatasets as TopicHealthy VolunteersHumansMagnetoencephalographyMiddle AgedRestSensitivity and SpecificityTime FactorsMagnetoencephalographyNeural oscillationsRobust estimationSignal variabilitySpectral analyses

Identifiers

PMID34923132
PMCPMC8852336

What OpenQuestion holds

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LicenceCC BY
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.