Evidence map›Paper›PMID 30825710›Full record

ArticleNeuroImage. Clinical2019

Decreased peak alpha frequency and impaired visual evoked potentials in first episode psychosis.

Michael Murphy, Dost Öngür

Abstract read
In one paragraph

Article in NeuroImage. Clinical, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing 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

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

  1. Pooled it
  2. Pooled it
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  7. Alpha oscillations are dysrhythmic in Fragile X syndrome.bioRxiv : the preprint server for biology · 2026
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  13. Generalized Slowing of Resting-State Neural Oscillations in People With Schizophrenia.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2025
    Article
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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

2 authors.

Michael MurphyHarvard Medical School, Boston, MA, United States of America; McLean Hospital, Belmont, MA, United States of America. Electronic address: mmurphy@mgh.harvard.edu.
Dost ÖngürHarvard Medical School, Boston, MA, United States of America; McLean Hospital, Belmont, MA, United States of America.

Funding

Excitation-inhibition imbalance, posteromedial cortical dysconnectivity, and thought disorder in first-episode psychosisK23MH118565 · NIMH · MCLEAN HOSPITAL · PI MURPHY, MICHAEL J · 2019 to 2023
$983k
NIMH NIH HHS K23 MH118565NIMH NIH HHS L30 MH107987
6 · The paper itself

Abstract

Abnormal spontaneous and evoked oscillations have been reported in several studies of patients with psychotic disorders. Resting alpha power and peak alpha frequency may be decreased in patients with psychosis. We used high-density EEG (hd-EEG) to record resting-state data and steady-state visual evoked potentials (SSVEPs) in patients with first episode psychosis (FEP) and healthy controls to compare brain resonances across multiple frequencies. We recorded hd-EEG (128 channels) from 22 FEP patients and 22 healthy controls during eyes-closed resting state and eyes-closed photic stimulation at 1 Hz, 4 Hz, 10 Hz, 20 Hz, and 40 Hz. Alpha power, peak alpha frequency, and SSVEP amplitude were analyzed using ANOVA and statistical non-parametric mapping. We found that FEP patients had lower peak alpha frequencies (9.72 Hz vs 10.40 Hz, p = .02, Cohen's d = 0.73) and this decrease was driven by slowing over the central and posterior scalp. There was no difference in alpha power. Alpha waves propagated primarily from anterior to posterior and that propagation was slowed in patients. During SSVEP, patients had smaller increases in EEG power in the stimulation band (F

Indexed as

AdultAlpha RhythmCerebral CortexDepressionEvoked Potentials, VisualFemaleFunctional NeuroimagingHumansMaleNerve NetPsychotic DisordersYoung AdultAlphaEEGFirst episode psychosisResting stateSchizophreniaSteady-state evoked potentials

Identifiers

PMID30825710
PMCPMC6396327

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.