Evidence map›Paper›PMID 25797499›Full record

ReviewEuropean archives of psychiatry and clinical neuroscience2015

Neurobiological background of negative symptoms.

Silvana Galderisi, Eleonora Merlotti, Armida Mucci

Abstract readReview
PubMed Publisher
In one paragraph

Review 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 54 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 8% 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

54 citing papers in PubMed, 1 synthesis or guideline pooled it, 110 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Cerebellar-Prefrontal Connectivity Predicts Negative Symptom Severity Across the Psychosis Spectrum.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2026
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  7. Review
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  11. Article
  12. Review
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  18. Article
  19. The pathophysiology of negative symptoms of schizophrenia: main hypotheses and open challenges.The British journal of psychiatry : the journal of mental science · 2023
    Article
  20. 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

3 authors at 2 institutions in 1 country.

Silvana GalderisiDepartment of Psychiatry, Second University of Naples (SUN), L.go Madonna delle Grazie, 1, 80138, Naples, Italy. silvana.galderisi@gmail.com.
Eleonora MerlottiDepartment of Psychiatry, Second University of Naples (SUN), L.go Madonna delle Grazie, 1, 80138, Naples, Italy.
Armida MucciDepartment of Psychiatry, Second University of Naples (SUN), L.go Madonna delle Grazie, 1, 80138, Naples, Italy.
University of Campania "Luigi Vanvitelli" · ITUniversity of Naples Federico II · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Studies investigating neurobiological bases of negative symptoms of schizophrenia failed to provide consistent findings, possibly due to the heterogeneity of this psychopathological construct. We tried to review the findings published to date investigating neurobiological abnormalities after reducing the heterogeneity of the negative symptoms construct. The literature in electronic databases as well as citations and major articles are reviewed with respect to the phenomenology, pathology, genetics and neurobiology of schizophrenia. We searched PubMed with the keywords "negative symptoms," "deficit schizophrenia," "persistent negative symptoms," "neurotransmissions," "neuroimaging" and "genetic." Additional articles were identified by manually checking the reference lists of the relevant publications. Publications in English were considered, and unpublished studies, conference abstracts and poster presentations were not included. Structural and functional imaging studies addressed the issue of neurobiological background of negative symptoms from several perspectives (considering them as a unitary construct, focusing on primary and/or persistent negative symptoms and, more recently, clustering them into factors), but produced discrepant findings. The examined studies provided evidence suggesting that even primary and persistent negative symptoms include different psychopathological constructs, probably reflecting the dysfunction of different neurobiological substrates. Furthermore, they suggest that complex alterations in multiple neurotransmitter systems and genetic variants might influence the expression of negative symptoms in schizophrenia. On the whole, the reviewed findings, representing the distillation of a large body of disparate data, suggest that further deconstruction of negative symptomatology into more elementary components is needed to gain insight into underlying neurobiological mechanisms.

Indexed as

Schizophrenic PsychologyAcetylcholineBrainDopamineFunctional Neuroimaginggamma-Aminobutyric AcidGlutamic AcidHumansMagnetic Resonance ImagingNeuroimagingSchizophreniaSerotoninSynaptic TransmissionAcetylcholineDopaminegamma-Aminobutyric AcidGlutamic AcidSerotoninDeficit schizophreniaGeneticNegative symptomsNeuroimagingNeurotransmissionsPersistent negative symptoms

Identifiers

PMID25797499
OpenAlexW1988402105

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.