Evidence map›Paper›PMID 30145728›Full record

ArticleBrain topography2019

Cortical Network Topology in Prodromal and Mild Dementia Due to Alzheimer's Disease: Graph Theory Applied to Resting State EEG.

Raffaella Franciotti, Nicola Walter Falasca, Dario Arnaldi, Francesco Famà, Claudio Babiloni, Marco Onofrj, Flavio Mariano Nobili, Laura Bonanni

Abstract read
In one paragraph

Article in Brain topography, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 3 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

31 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  8. The network neuropsychology of juvenile myoclonic epilepsy.Cortex; a journal devoted to the study of the nervous system and behavior · 2025
    Article
  9. Alpha rhythm and Alzheimer's disease: Has Hans Berger's dream come true?Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2025
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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

8 authors.

Raffaella FranciottiDepartment of Neuroscience, Imaging and Clinical Science, "G. d'Annunzio" University, Via Luigi Polacchi, 66013, Chieti, Italy.
Nicola Walter FalascaDepartment of Neuroscience, Imaging and Clinical Science, "G. d'Annunzio" University, Via Luigi Polacchi, 66013, Chieti, Italy.
Dario ArnaldiDipartimento di Neuroscienze (DINOGMI), Università di Genova, Genoa, Italy.
Francesco FamàDipartimento di Neuroscienze (DINOGMI), Università di Genova, Genoa, Italy.
Claudio BabiloniDepartment of Physiology and Pharmacology, University of Rome "La Sapienza", Rome, Italy.
Marco OnofrjDepartment of Neuroscience, Imaging and Clinical Science, "G. d'Annunzio" University, Via Luigi Polacchi, 66013, Chieti, Italy.
Flavio Mariano NobiliDipartimento di Neuroscienze (DINOGMI), Università di Genova, Genoa, Italy.
Laura BonanniDepartment of Neuroscience, Imaging and Clinical Science, "G. d'Annunzio" University, Via Luigi Polacchi, 66013, Chieti, Italy. l.bonanni@unich.it.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Graph theory analysis on resting state electroencephalographic rhythms disclosed topological properties of cerebral network. In Alzheimer's disease (AD) patients, this approach showed mixed results. Granger causality matrices were used as input to the graph theory allowing to estimate the strength and the direction of information transfer between electrode pairs. The number of edges (degree), the number of inward edges (in-degree), of outgoing edges (out-degree) were statistically compared among healthy controls, patients with mild cognitive impairment due to AD (AD-MCI) and AD patients with mild dementia (ADD) to evaluate if degree abnormality could involve low and/or high degree vertices, the so called hubs, in both prodromal and over dementia stage. Clustering coefficient and local efficiency were evaluated as measures of network segregation, path length and global efficiency as measures of integration, the assortativity coefficient as a measure of resilience. Degree, in-degree and out-degree values were lower in AD-MCI and ADD than the control group for non-hubs and hubs vertices. The number of edges was preserved for frontal electrodes, where patients' groups showed an additional hub in F3. Clustering coefficient was lower in ADD compared with AD-MCI in the right occipital electrode, and it was positively correlated with mini mental state examination. Local and global efficiency values were lower in patients' than control groups. Our results show that the topology of the network is altered in AD patients also in its prodromal stage, begins with the reduction of the number of edges and the loss of the local and global efficiency.

Indexed as

AgedAged, 80 and overAlzheimer DiseaseBrainCognitive DysfunctionElectroencephalographyFemaleHumansMaleGranger causalityGraph theoryIntegrationMild cognitive impairmentResilienceSegregation

Identifiers

PMID30145728
PMCPMC6326972

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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.