Evidence map›Paper›PMID 34764242›Full record

SynthesisTranslational psychiatry2021

A review of functional and structural neuroimaging studies to investigate the inner speech model of auditory verbal hallucinations in schizophrenia.

Liam Barber, Renate Reniers, Rachel Upthegrove

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in Translational psychiatry, 2021. 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
5.1field-weighted citation impact, top 4% 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, 59 citations in OpenAlex.

  1. Pooled it
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  16. On the 'Hallucinations' of Artificial Intelligence and the Hallucination Experience in Human.Turk psikiyatri dergisi = Turkish journal of psychiatry · 2024
    Article
  17. Mapping alterations in the local synchrony of the cerebral cortex in schizophrenia.European psychiatry : the journal of the Association of European Psychiatrists · 2023
    Article
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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

3 authors at 2 institutions in 1 country.

Liam BarberCollege of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, UK. LDB498@alumni.bham.ac.uk.ORCID 0000-0002-6219-6817
Renate ReniersInstitute of Clinical Sciences, University of Birmingham, Birmingham, UK.
Rachel UpthegroveCentre for Human Brain Health, University of Birmingham, Birmingham, UK.ORCID 0000-0001-8204-5103
University of Birmingham · GBBirmingham Women’s and Children’s NHS Foundation Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although the pathophysiology of auditory verbal hallucinations remains uncertain, the inner speech model remains a prominent theory. A systematic review and meta-analyses of both functional and structural neuroimaging studies were performed to investigate the inner speech model. Of the 417 papers retrieved, 26 met the inclusion criteria. Meta-analyses found the left insula to be significantly active during auditory verbal hallucinations and to have a significantly reduced grey matter volume in hallucinators. Dysfunction of the left insula may contribute to the misattribution of inner speech due to its suggested roles in both inner speech production and the salience network. No significant activity was found at Broca's area or Heschl's gyrus during auditory verbal hallucinations. Furthermore, no structural abnormalities were found at these sites or in the arcuate fasciculi. Overall, evidence was found to both support and oppose the inner speech model. Further research should particularly include a systematic review of task-based trait studies with a focus on inner speech production and self-referential processing, and analyses of additional language-related white matter tracts.

Indexed as

Auditory CortexSchizophreniaHallucinationsHumansMagnetic Resonance ImagingNeuroimagingSpeech

Identifiers

PMID34764242
PMCPMC8585980
OpenAlexW3204400238

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.