Evidence map›Paper›PMID 26394050›Full record

ArticlePloS one2015

Age and Vascular Burden Determinants of Cortical Hemodynamics Underlying Verbal Fluency.

Sebastian Heinzel, Florian G Metzger, Ann-Christine Ehlis, Robert Korell, Ahmed Alboji, Florian B Haeussinger, Isabel Wurster, Kathrin Brockmann, Ulrike Suenkel, Gerhard W Eschweiler and 3 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. Prefrontal oxygenation during verbal fluency in severe obesity.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Article
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  9. Observational
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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

13 authors at 4 institutions in 1 country.

Sebastian HeinzelDepartment of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tuebingen, Tuebingen, Germany; Department of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany; German Center for Neurodegenerative Diseases (DZNE), Tuebingen, Germany.
Florian G MetzgerDepartment of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany; Geriatric Center, University Hospital Tübingen, Tübingen, Germany.
Ann-Christine EhlisDepartment of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany.
Robert KorellDepartment of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany.
Ahmed AlbojiDepartment of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany.
Florian B HaeussingerDepartment of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany.
Isabel WursterDepartment of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tuebingen, Tuebingen, Germany.
Kathrin BrockmannDepartment of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tuebingen, Tuebingen, Germany.
Ulrike SuenkelDepartment of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tuebingen, Tuebingen, Germany.
Gerhard W EschweilerDepartment of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany; Geriatric Center, University Hospital Tübingen, Tübingen, Germany.
Walter MaetzlerDepartment of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tuebingen, Tuebingen, Germany; German Center for Neurodegenerative Diseases (DZNE), Tuebingen, Germany.
Daniela BergDepartment of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tuebingen, Tuebingen, Germany; German Center for Neurodegenerative Diseases (DZNE), Tuebingen, Germany.
Andreas J FallgatterDepartment of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany.
University of Tübingen · DEHertie Institute for Clinical Brain Research · DEUniversity Children's Hospital Tübingen · DEGerman Center for Neurodegenerative Diseases · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAging processes and several vascular burden factors have been shown to increase the risk of dementia including Alzheimer's disease. While pathological alterations in dementia precede diagnosis by many years, reorganization of brain processing might temporarily delay cognitive decline. We hypothesized that in healthy elderly individuals both age-related neural and vascular factors known to be related to the development of dementia impact functional cortical hemodynamics during increased cognitive demands.

methodsVascular burden factors and cortical functional hemodynamics during verbal fluency were assessed in 1052 non-demented elderly individuals (51 to 83 years; cross-sectional data of the longitudinal TREND study) using functional near-infrared spectroscopy (fNIRS). The prediction of functional hemodynamic responses by age in multiple regressions and the impact of single and cumulative vascular burden factors including hypertension, diabetes, obesity, smoking and atherosclerosis were investigated.

resultsReplicating and extending previous findings we could show that increasing age predicted functional hemodynamics to be increased in right prefrontal and bilateral parietal cortex, and decreased in bilateral inferior frontal junction during phonological fluency. Cumulative vascular burden factors, with hypertension in particular, decreased left inferior frontal junction hemodynamic responses during phonological fluency. However, age and vascular burden factors showed no statistical interaction on functional hemodynamics.

conclusionBased on these findings, one might hypothesize that increased fronto-parietal processing may represent age-related compensatory reorganization during increased cognitive demands. Vascular burden factors, such as hypertension, may contribute to regional cerebral hypoperfusion. These neural and vascular hemodynamic determinants should be investigated longitudinally and combined with other markers to advance the prediction of future cognitive decline and dementia.

Indexed as

AgedAged, 80 and overAgingBlood PressureBrainCerebrovascular CirculationCognition DisordersCross-Sectional StudiesDementiaFemaleHemodynamicsHumansMaleMiddle AgedNeuropsychological TestsPsychomotor Performance

Identifiers

PMID26394050
PMCPMC4578891
OpenAlexW2336796983

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.