Evidence map›Paper›PMID 34497330›Full record

ArticleScientific reports2021

Individual alpha peak frequency is slower in schizophrenia and related to deficits in visual perception and cognition.

Ian S Ramsay, Peter A Lynn, Brandon Schermitzler, Scott R Sponheim

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
7.0field-weighted citation impact, top 2% 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

49 citing papers in PubMed, 87 citations in OpenAlex.

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  15. Generalized Slowing of Resting-State Neural Oscillations in People With Schizophrenia.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Ian S RamsayDepartment of Psychiatry & Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA. ramsa045@umn.edu.
Peter A LynnDepartment of Psychiatry & Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA.
Brandon SchermitzlerDepartment of Psychiatry & Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA.
Scott R SponheimDepartment of Psychiatry & Behavioral Sciences, University of Minnesota, Minneapolis, MN, USA.
University of Minnesota · US

Funding

Can tDCS accelerate and sustain the cognitive benefits of targeted cognitive training in schizophreniaK01MH117451 · NIMH · UNIVERSITY OF MINNESOTA · PI RAMSAY, IAN SPICER · 2019 to 2022
$666k
Quantitative Modeling of Visual Perception Endophenotypes in SchizophreniaI01CX000227 · VA · MINNEAPOLIS VA MEDICAL CENTER · PI SPONHEIM, SCOTT R · 2011 to 2018
–
CSRD VA I01 CX000227NIMH NIH HHS K01 MH117451
6 · The paper itself

Abstract

The brain at rest generates cycles of electrical activity that have been shown to be abnormal in people with schizophrenia. The alpha rhythm (~ 10 Hz) is the dominant resting state electrical cycle and each person has a propensity toward a particular frequency of oscillation for this rhythm. This individual alpha peak frequency (IAPF) is hypothesized to be central to visual perceptual processes and may have downstream influences on cognitive functions such as attention, working memory, or problem solving. In the current study we sought to determine whether IAPF was slower in schizophrenia, and whether lower IAPF predicted deficits in visual perception and cognition that are often observed in schizophrenia. Eyes-closed resting state EEG activity, visual attention, and global cognitive functioning were assessed in individuals with schizophrenia (N = 104) and a group of healthy controls (N = 101). Compared to controls, the schizophrenia group showed slower IAPF and was associated with poorer discrimination of visual targets and nontargets on a computerized attention task, as well as impaired global cognition measured using neuropsychological tests across groups. Notably, disruptions in visual attention fully mediated the relationship between IAPF and global cognition across groups. The current findings demonstrate that slower alpha oscillatory cycling accounts for global cognitive deficits in schizophrenia by way of impairments in perceptual discrimination measured during a visual attention task.

Indexed as

AdolescentAdultAlpha RhythmAttentionBrainCognitionElectroencephalographyFemaleHumansMaleMemory, Short-TermMiddle AgedNeuropsychological TestsSchizophreniaSchizophrenic PsychologyVisual Perception

Identifiers

PMID34497330
PMCPMC8426382
OpenAlexW3198898819

What OpenQuestion holds

Textmetadata
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.