Evidence map›Paper›PMID 37459658›Full record

ArticleNeurobiology of aging2023

Spectral power ratio as a measure of EEG changes in mild cognitive impairment due to Alzheimer's disease: a case-control study.

Aimee A Flores-Sandoval, Paula Davila-Pérez, Stephanie S Buss, Kevin Donohoe, Margaret O'Connor, Mouhsin M Shafi, Alvaro Pascual-Leone, Christopher S Y Benwell, Peter J Fried

Open access · bronzeAbstract read
In one paragraph

Article in Neurobiology of aging, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 6% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  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. Article
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  5. Article
  6. Sleep Abnormalities and Risk of Alzheimer's Disease.Current neurology and neuroscience reports · 2025
    Review
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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

9 authors at 4 institutions in 4 countries.

Aimee A Flores-SandovalBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Charité - Universitätsmedizin Berlin, Einstein Center for Neurosciences Berlin, 10117 Berlin, Germany; Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany. Electronic address: aimee-arely.flores-sandoval@charite.de.
Paula Davila-PérezBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Department of Clinical Neurophysiology, Hospital Universitario Rey Juan Carlos, Móstoles, Spain; Division of Cognitive Neurology, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA.
Stephanie S BussBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Division of Cognitive Neurology, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA; Department of Neurology, Harvard Medical School, Boston, MA, USA.
Kevin DonohoeDepartment of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
Margaret O'ConnorBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Division of Cognitive Neurology, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA; Department of Neurology, Brigham and Women's Hospital, Boston, MA, USA.
Mouhsin M ShafiBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Department of Neurology, Harvard Medical School, Boston, MA, USA.
Alvaro Pascual-LeoneDepartment of Neurology, Harvard Medical School, Boston, MA, USA; Hinda and Arthur Marcus Institute for Aging Research, and Deanna and Sidney Wolk Center for Memory Health, Hebrew Senior Life, Boston, MA, USA.
Christopher S Y BenwellBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Division of Cognitive Neurology, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA; Division of Psychology, School of Humanities, Social Sciences and Law, University of Dundee, Dundee, UK.
Peter J FriedBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Division of Cognitive Neurology, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA; Department of Neurology, Harvard Medical School, Boston, MA, USA. Electronic address: pfried@bidmc.havard.edu.
Beth Israel Deaconess Medical Center · USBerenson Allen Center for Noninvasive Brain Stimulation · USEinstein Center for Neurosciences Berlin · DEHebrew SeniorLife · US

Funding

The Role of Inflammation in the Pathophysiology of Delirium and its Associated Long-Term Cognitive DeclineP01AG031720 · NIA · HEBREW REHABILITATION CENTER FOR AGED · PI INOUYE, SHARON K. · 2010 to 2022
$26.7M
Personalized brain activity modulation to improve balance and cognition in elderly fallersR01AG059089 · NIA · HEBREW REHABILITATION CENTER FOR AGED · PI MANOR, BRADLEY D. · 2018 to 2022
$3.2M
Repetitive TMS-induced modulation of cortical excitability in ADR01MH115949 · NIMH · BETH ISRAEL DEACONESS MEDICAL CENTER · PI SHAFI, MOUHSIN · 2018 to 2022
$3.2M
Treating hyperexcitability in Alzheimer’s disease with levetiracetam to improve brain function and cognitionR01AG060987 · NIA · BETH ISRAEL DEACONESS MEDICAL CENTER · PI SHAFI, MOUHSIN · 2019 to 2023
$3.0M
Multifocal transcranial current stimulation for cognitive and motor dysfunction in dementiaR01AG076708 · NIA · HEBREW REHABILITATION CENTER FOR AGED · PI MANOR, BRADLEY D., PASCUAL-LEONE, ALVARO · 2022 to 2024
$2.3M
Cortical connectivity, physiology, and response to stimulation in human epilepsyR01NS073601 · NINDS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI CHANG, BERNARD S. · 2011 to 2015
$1.9M
Understanding the structural, functional, and prognostic implications of cortical excitability in Alzheimer's diseaseK23AG068364 · NIA · BETH ISRAEL DEACONESS MEDICAL CENTER · PI BUSS, STEPHANIE · 2021 to 2025
$921k
Cortical plasticity in type II diabetes mellitusR21NS082870 · NINDS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI PASCUAL-LEONE, ALVARO · 2013 to 2014
$490k
Brain Plasticity Measures in MCIR21AG051846 · NIA · BETH ISRAEL DEACONESS MEDICAL CENTER · PI PASCUAL-LEONE, ALVARO · 2016 to 2017
$476k
NIA NIH HHS K23 AG068364NIA NIH HHS P01 AG031720NIA NIH HHS R01 AG059089NIA NIH HHS R01 AG060987NIA NIH HHS R01 AG076708NIA NIH HHS R21 AG051846NIMH NIH HHS R01 MH115949NINDS NIH HHS R01 NS073601NINDS NIH HHS R21 NS082870
6 · The paper itself

Abstract

Adopting preventive strategies in individuals with subclinical Alzheimer's disease (AD) has the potential to delay dementia onset and reduce healthcare costs. Thus, it is extremely important to identify inexpensive, scalable, sensitive, and specific markers to track disease progression. The electroencephalography spectral power ratio (SPR: the fast to slow spectral power ratio), a measure of the shift in power distribution from higher to lower frequencies, holds potential for aiding clinical practice. The SPR is altered in patients with AD, correlates with cognitive functions, and can be easily implemented in clinical settings. However, whether the SPR is sensitive to pathophysiological changes in the prodromal stage of AD is unclear. We explored the SPR of individuals diagnosed with amyloid-positive amnestic mild cognitive impairment (Aβ+aMCI) and its association with both cognitive function and amyloid load. The SPR was lower in Aβ+aMCI than in the cognitively unimpaired individuals and correlated with executive function scores but not with amyloid load. Hypothesis-generating analyses suggested that aMCI participants with a lower SPR had an increased probability of a positive amyloid positron emission tomography. Future research may explore the potential of this measure to classify aMCI individuals according to their AD biomarker status.

Indexed as

Alzheimer DiseaseCognitive DysfunctionAmyloidAmyloid beta-PeptidesCase-Control StudiesElectroencephalographyHumansNeuropsychological TestsPositron-Emission TomographyAmyloidAmyloid beta-PeptidesAmyloidEEGMild cognitive impairmentNeurophysiologySpectral power ratio

Identifiers

PMID37459658
PMCPMC10614059
OpenAlexW4377246787

What OpenQuestion holds

Textmetadata
LicenceTDM
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.