Evidence map›Paper›PMID 25881114›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2015

Reward Processing in Unipolar and Bipolar Depression: A Functional MRI Study.

Ronny Redlich, Katharina Dohm, Dominik Grotegerd, Nils Opel, Pienie Zwitserlood, Walter Heindel, Volker Arolt, Harald Kugel, Udo Dannlowski

Open access · hybridAbstract read
In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 2 pooled it
10.5field-weighted citation impact, top 1% 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

61 citing papers in PubMed, 2 syntheses or guidelines pooled it, 164 citations in OpenAlex.

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1 more citing papers are in PubMed but not listed here.

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

9 authors at 2 institutions in 1 country.

Ronny RedlichDepartment of Psychiatry, University of Münster, Münster, Germany.
Katharina DohmDepartment of Psychiatry, University of Münster, Münster, Germany.
Dominik GrotegerdDepartment of Psychiatry, University of Münster, Münster, Germany.
Nils OpelDepartment of Psychiatry, University of Münster, Münster, Germany.
Pienie ZwitserloodDepartment of Psychology, University of Münster, Münster, Germany.
Walter HeindelDepartment of Clinical Radiology, University of Münster, Münster, Germany.
Volker AroltDepartment of Psychiatry, University of Münster, Münster, Germany.
Harald KugelDepartment of Clinical Radiology, University of Münster, Münster, Germany.
Udo DannlowskiDepartment of Psychiatry, University of Münster, Münster, Germany.
University of Münster · DEPhilipps University of Marburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Differentiating bipolar disorders (BD) from unipolar depression (UD) remains a major clinical challenge. The identification of neurobiological markers may help to differentiate these disorders, particularly during depressive episodes. This cross-sectional study, including 33 patients with UD, 33 patients with BD, and 34 healthy controls, is one of the first to directly compare UD and BD with respect to reward processing. A card-guessing paradigm was employed and brain activity associated with reward processing was investigated by means of fMRI. A 3 (group) × 2 (condition: reward>control, loss>control) ANOVA was conducted using the nucleus accumbens (NAcc) as ROI. Furthermore, a whole-brain approach was applied. A functional connectivity analysis was performed to characterize diagnosis-related alterations in the functional coupling between the NAcc and other brain areas. The ANOVA revealed higher activity for healthy controls (HCs) than for BD and UD in the NAcc during reward processing. Moreover, UD showed a higher functional connectivity between the NAcc and the VTA than HC. The patients groups could be differentiated in that BD showed a decreased activation, in the reward condition, of the NAcc, caudate nucleus, thalamus, putamen, insula, and prefrontal areas compared with UD. These results may help to refine the understanding of neural correlates of reward processing in both disorders, and to understand the neural underpinnings of anhedonia, a core symptom of depressive episodes.

Indexed as

RewardAdultAnalysis of VarianceBipolar DisorderBrainBrain MappingCross-Sectional StudiesDepressive DisorderDiagnosis, DifferentialFemaleHumansMagnetic Resonance ImagingMaleMental ProcessesNeural PathwaysNeuropsychological Tests

Identifiers

PMID25881114
PMCPMC4569953
OpenAlexW1976921288

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.