Evidence map›Paper›PMID 25209949›Full record

ArticleHuman brain mapping2015

Illness denial in schizophrenia spectrum disorders: a function of left hemisphere dominance.

Philip Gerretsen, Mahesh Menon, M Mallar Chakravarty, Jason P Lerch, David C Mamo, Gary Remington, Bruce G Pollock, Ariel Graff-Guerrero

Abstract read
In one paragraph

Article in Human brain mapping, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

16 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Impacts on and Care of Psychiatric Patients during the Outbreak of COVID-19.Clinical practice and epidemiology in mental health : CP & EMH · 2021
    Review
  12. Article
  13. Article
  14. Article
  15. Denial Defense Mechanism in Dialyzed Patients.Medical science monitor : international medical journal of experimental and clinical research · 2015
    Article
  16. 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

8 authors.

Philip GerretsenMultimodal Imaging Group, Research Imaging Centre, Centre for Addiction & Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.
Mahesh Menon
M Mallar Chakravarty
Jason P Lerch
David C Mamo
Gary Remington
Bruce G Pollock
Ariel Graff-Guerrero

Funding

Optimal Dosing of Antipsychotic Drugs in Late LifeR01MH084886 · NIMH · CENTRE FOR ADDICTION AND MENTAL HEALTH · PI MAMO, DAVID · 2010 to 2014
$761k
NIMH NIH HHS R01 MH084886NIMH NIH HHS R01MH084886
6 · The paper itself

Abstract

Impaired illness awareness or anosognosia is a common, but poorly understood feature of schizophrenia that contributes to medication nonadherence and poor treatment outcomes. Here we present a functional imaging study to measure brain activity at the moment of illness denial. To accomplish this, participants with schizophrenia (n = 18) with varying degrees of illness awareness were confronted with their illness beliefs while undergoing functional MRI. To link structure with function, we explored the relationships among impaired illness awareness and brain activity during the illness denial task with cortical thickness. Impaired illness awareness was associated with increased brain activity in the left temporoparieto-occipital junction (TPO) and left medial prefrontal cortex (mPFC) at the moment of illness denial. Brain activity in the left mPFC appeared to be a function of participants' degree of self-reflectiveness, while the activity in the left TPO was associated with cortical thinning in this region and more specific to illness denial. Participants with impaired illness awareness had slower response times to illness related stimuli than those with good illness awareness. Increased left hemisphere brain activity in association with illness denial is consistent with the literature in other neuropsychiatric conditions attributing anosognosia or impaired illness awareness to left hemisphere dominance. The TPO and mPFC may represent putative targets for noninvasive treatment interventions, such as transcranial magnetic or direct current stimulation.

Indexed as

Schizophrenic PsychologyAdolescentAdultAgedAwarenessBrainFemaleFunctional LateralityHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMiddle AgedNeuropsychological TestsOxygenPsychiatric Status Rating ScalesOxygenanosognosiacognitive insightcortical thicknessdenialfunctional MRIillness awarenessinsight

Identifiers

PMID25209949
PMCPMC4268179

What OpenQuestion holds

Textmetadata
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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.