Evidence map›Paper›PMID 25567477›Full record

ArticleEuropean archives of psychiatry and clinical neuroscience2015

Retinal dysfunction of contrast processing in major depression also apparent in cortical activity.

Emanuel Bubl, Elena Kern, Dieter Ebert, Andreas Riedel, Ludger Tebartz van Elst, Michael Bach

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Article in European archives of psychiatry and clinical neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 9% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

  1. Pooled it
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  6. Review
  7. Review
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  13. Reduced visual contrast suppression during major depressive episodes.Journal of psychiatry & neuroscience : JPN · 2021
    Article
  14. Article
  15. Article
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  17. Review
  18. Article
  19. Indolethylamine-Frontiers in neuroscience · 2018
    Review
  20. Classification and neurobiological concepts of mania, bipolar disorder and major depression.European archives of psychiatry and clinical neuroscience · 2015
    Article
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

6 authors at 2 institutions in 1 country.

Emanuel BublDepartment of Psychiatry and Psychotherapy, Albert-Ludwigs-Universität, Hauptstr. 5, 79104, Freiburg, Germany, emanuel.bubl@uniklinik-freiburg.de.
Elena Kern
Dieter Ebert
Andreas Riedel
Ludger Tebartz van Elst
Michael Bach
University of Freiburg · DEUniversity Medical Center Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Depressive disorder is often associated with the subjective experience of altered visual perception. Recent research has produced growing evidence for involvement of the visual system in the pathophysiology of depressive disorder. Using the pattern electroretinogram (PERG), we found reduced retinal contrast response in patients with major depression. Based on this observation, the question arises whether this change has a cortical correlate. To evaluate this, we analyzed the visual evoked potential (VEP) of the occipital cortex in 40 patients with depressive disorder and 28 healthy controls. As visual stimuli, checkerboard stimuli of 0.51° check size, 12.5 reversals per second and a contrast of 3-80% was used. In addition to the PERG, we recorded the VEP with an Oz versus FPz derivation. The amplitude versus contrast transfer function was compared across the two groups and correlated with the severity of depression, as measured by the Hamilton Depression Rating Scale and the Beck Depression Inventory. Patients with major depression displayed significantly reduced VEP amplitudes at all contrast levels compared to control subjects (p = 0.029). The VEP amplitude correlated with psychometric measures for severity of depression. The degree of depression reduced the contrast transfer function in the VEP to a lesser extent than in the PERG: While the PERG is reduced to ≈50%, the VEP is reduced to 75%. Our results suggest that depression affects the cortical response in major depression, but less so than the retinal responses. Modified contrast adaptation in the lateral geniculate nucleus or cortex possibly moderates the increased losses in the retina.

Indexed as

AdultCerebral CortexContrast SensitivityElectroencephalographyElectroretinographyEvoked Potentials, VisualFemaleFourier AnalysisHumansMajor Depressive DisorderMaleMiddle AgedPhotic StimulationPsychiatric Status Rating ScalesRetinal DiseasesStatistics as Topic

Identifiers

PMID25567477
OpenAlexW2079451059

What OpenQuestion holds

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Read underepoch 390

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.