Evidence map›Paper›PMID 12637301›Full record

ArticleAJNR. American journal of neuroradiology2003

Correlations of hippocampal atrophy and focal low-frequency magnetic activity in Alzheimer disease: volumetric MR imaging-magnetoencephalographic study.

Alberto Fernández, Juan Arrazola, Fernando Maestú, Carlos Amo, Pedro Gil-Gregorio, Christian Wienbruch, Tomás Ortiz

Open access · greenAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
2.7field-weighted citation impact, top 11% 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

39 citing papers in PubMed, 130 citations in OpenAlex.

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  11. The Aging Patterns of Brain Structure, Function, and Energy Metabolism.Advances in experimental medicine and biology · 2023
    Article
  12. EEG asymmetry and cognitive testing in MCI identification.International journal of psychophysiology : official journal of the International Organization of Psychophysiology · 2022
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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

7 authors at 1 institution in 1 country.

Alberto FernándezCenter for Magnetoencephalography Dr Pérez Modrego, Universidad Complutense de Madrid, Hospital Universitario San Carlos, Madrid, Spain.
Juan Arrazola
Fernando Maestú
Carlos Amo
Pedro Gil-Gregorio
Christian Wienbruch
Tomás Ortiz
Hospital Clínico San Carlos · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposePatients with Alzheimer disease (AD) have more low-frequency activity on conventional EEG and increased focal magnetoencephalographic (MEG) dipole density (DD) in delta and theta bands. This activity concurs with atrophy and reduced metabolic and perfusion rates, particularly in temporoparietal structures. The relationship between functional and structural measures and their conjoined capability to improve the diagnosis of AD were assessed in this study.

methodsWhole-head MEG recordings were obtained in 15 patients in whom the diagnosis of AD had been made and in 16 healthy control subjects during a resting condition. MR imaging volumetric data were also obtained; these included global cerebral, temporal lobe, and hippocampal volumes.

resultsDD in the delta and theta bands was enhanced in the AD group compared with the healthy control subjects. Slow-wave activity differed significantly between the groups in the temporoparietal regions of both hemispheres. Left hippocampal volume was correlated with left temporal and parietal delta DD and left temporal theta DD. A combination of left hippocampal volume and left temporal theta DD enabled correct classification in 87.1% of the patients with AD or control subjects.

conclusionResults support the predominant role of temporoparietal hypofunction as defined by DD and hippocampal structural deficits shown on MR images in patients with AD. A multidisciplinary perspective of different techniques may improve our understanding of the disease and our diagnostic abilities.

Indexed as

Magnetic Resonance ImagingMagnetoencephalographyAgedAlzheimer DiseaseAtrophyBrain MappingCerebral CortexDelta RhythmDominance, CerebralFemaleHippocampusHumansMaleMental Status ScheduleNeuropsychological TestsSensitivity and Specificity

Identifiers

PMID12637301
PMCPMC7973601
OpenAlexW2122911185

What OpenQuestion holds

Textmetadata
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.