Evidence map›Paper›PMID 41313764›Full record

ArticleScience advances2025

Neurophysiological signatures of default mode network dysfunction and cognitive decline in Alzheimer's disease.

Recep A Ozdemir, Brice Passera, Peter J Fried, Daniel Press, Lynn W Shaughnessy, Stephanie Buss, Mouhsin M Shafi

Registry-linked trialAbstract read
In one paragraph

Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03875638 (Treating Hyperexcitability in Alzheimer's Disease With Levetiracetam to Improve Brain Function and Cognition), which is not on this map. Cited by 2 papers.

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

NCT03875638 phase2completednot on this map

Treating Hyperexcitability in Alzheimer's Disease With Levetiracetam to Improve Brain Function and Cognition

TypeinterventionalSponsorBeth Israel Deaconess Medical CenterRan2019 to 2026Enrolled58ConditionsAlzheimer Dementia, Alzheimer Disease, Dementia of Alzheimer Type, Mild Cognitive ImpairmentArmsLevetiracetam, Placebo oral capsule
3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Clinical utility and prospective of TMS-EEG: Updated review from an international expert group.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2026
    Review
  2. Review
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

7 authors.

Recep A OzdemirBerenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA.ORCID 0000-0003-2832-1300
Brice PasseraBerenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA.ORCID 0000-0001-9821-1970
Peter J FriedBerenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA.ORCID 0000-0001-6041-2996
Daniel PressBerenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA.ORCID 0000-0001-6401-1305
Lynn W ShaughnessyDepartment of Neurology, Harvard Medical School, Boston, MA, USA.
Stephanie BussBerenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA.ORCID 0000-0002-9912-063X
Mouhsin M ShafiBerenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, USA.ORCID 0000-0002-4531-1967

Funding

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
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
NIA NIH HHS K23 AG068364NIA NIH HHS R01 AG060987NIMH NIH HHS R01 MH115949
6 · The paper itself

Abstract

Neural hyperexcitability and network dysfunction are neurophysiological hallmarks of Alzheimer's disease (AD) in animal studies, but their presence and clinical relevance in humans remain poorly understood. We introduce a perturbation-based approach combining transcranial magnetic stimulation and electroencephalography (TMS-EEG), alongside resting-state EEG (rsEEG), to investigate neurophysiological basis of default mode network (DMN) dysfunction in early AD. While rsEEG revealed global neural slowing and disrupted synchrony, these measures reflected widespread changes in brain neurophysiology without network-specific insights. In contrast, TMS-EEG identified network-specific local hyperexcitability in the parietal DMN and disrupted connectivity with frontal DMN regions, which uniquely predicted distinct cognitive impairments and mediated the link between structural brain integrity and cognition. Our findings provide critical insights into how network-specific neurophysiological disruptions contribute to AD-related cognitive dysfunction. Perturbation-based assessments hold promise as potential markers of early detection, disease progression, and target engagement for disease-modifying therapies aiming to restore abnormal neurophysiology in AD.

Indexed as

Alzheimer DiseaseCognitive DysfunctionDefault Mode NetworkNerve NetAgedBrainElectroencephalographyFemaleHumansMagnetic Resonance ImagingMaleTranscranial Magnetic Stimulation

Identifiers

PMID41313764
PMCPMC12662210

What Socratic holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

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.