Evidence map›Paper›PMID 29328019›Full record

ArticlePsychological medicine2018

Amygdala reactivity in ethnic minorities and its relationship to the social environment: an fMRI study.

Robert McCutcheon, Michael A P Bloomfield, Tarik Dahoun, Marina Quinlan, Sylvia Terbeck, Mitul Mehta, Oliver Howes

Open access · hybridAbstract read
In one paragraph

Article in Psychological medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 22% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. The ethnic density effect in psychosis: a systematic review and multilevel meta-analysis.The British journal of psychiatry : the journal of mental science · 2021
    Pooled it
  2. Article
  3. Article
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  5. Article
  6. Article
  7. Exploring causal mechanisms of psychosis risk.Neuroscience and biobehavioral reviews · 2024
    Review
  8. Article
  9. Opportunities to Discuss Diversity-Related Topics in Neuroscience Courses.Journal of undergraduate neuroscience education : JUNE : a publication of FUN, Faculty for Undergraduate Neuroscience · 2022
    Article
  10. Article
  11. Healthy individualsWorld journal of clinical cases · 2021
    Article
  12. 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

7 authors at 5 institutions in 1 country.

Robert McCutcheonDepartment of Psychosis Studies,Institute of Psychiatry,Psychology & Neuroscience,Kings College London,De Crespigny Park,London SE5 8AF,UK.
Michael A P BloomfieldDepartment of Psychosis Studies,Institute of Psychiatry,Psychology & Neuroscience,Kings College London,De Crespigny Park,London SE5 8AF,UK.
Tarik DahounPsychiatric Imaging Group,Robert Steiner MR Unit,MRC London Institute of Medical Sciences,Hammersmith Hospital,London W12 0NN,UK.
Marina QuinlanPsychiatric Imaging Group,Robert Steiner MR Unit,MRC London Institute of Medical Sciences,Hammersmith Hospital,London W12 0NN,UK.
Sylvia TerbeckSchool of Psychology,Plymouth University,Drake Circus,Plymouth PL48AA,UK.
Mitul MehtaDepartment of Neuroimaging,Institute of Psychiatry,Psychology & Neuroscience,Kings College London,De Crespigny Park,London SE5 8AF,UK.
Oliver HowesDepartment of Psychosis Studies,Institute of Psychiatry,Psychology & Neuroscience,Kings College London,De Crespigny Park,London SE5 8AF,UK.
MRC London Institute of Medical Sciences · GBHammersmith Hospital · GBImperial College London · GBKing's College London · GBUniversity of Plymouth · GB

Funding

Medical Research Council G0700995Medical Research Council MC-A656-5QD30Medical Research Council MC_U120097115Medical Research Council MR/L022176/1Medical Research Council MR/N026063/1Medical Research Council MR/N027078/1Wellcome Trust 094849/Z/10/ZWellcome Trust 200102
6 · The paper itself

Abstract

backgroundEthnic minority individuals have an increased risk of developing a psychotic disorder, particularly if they live in areas of ethnic segregation, or low own group ethnic density. The neurobiological mechanisms underlying this ethnic minority associated risk are unknown. We used functional MRI to investigate neural responses to faces of different ethnicity, in individuals of black ethnicity, and a control group of white British ethnicity individuals.

methodsIn total 20 individuals of black ethnicity, and 22 individuals of white British ethnicity underwent a 3T MRI scan while viewing faces of black and white ethnicity. Own group ethnic density was calculated from the 2011 census. Neighbourhood segregation was quantified using the Index of Dissimilarity method.

resultsAt the within-group level, both groups showed greater right amygdala activation to outgroup faces. Between groups, the black ethnicity group showed greater right amygdala activation to white faces, compared to the white ethnicity group. Within the black ethnicity group, individuals living in areas of lower own group ethnic density showed greater right amygdala reactivity to white faces (r = -0.61, p = 0.01).

conclusionsThis is the first time an increased amygdala response to white faces has been demonstrated in individuals of black ethnicity. In the black ethnicity group, correlations were observed between amygdala response and neighbourhood variables associated with increased psychosis risk. These results may have relevance for our understanding of the increased rates of paranoia and psychotic disorders in ethnic minority individuals.

Indexed as

Black PeopleMinority GroupsResidence CharacteristicsSocial EnvironmentSocial PerceptionWhite PeopleAdultAmygdalaBrain MappingFacial RecognitionFemaleHumansMagnetic Resonance ImagingMaleUnited KingdomYoung AdultAmygdalaethnic densityethnicityethnic minorityfMRIparanoiapsychosisrisk factorsschizophrenia

Identifiers

PMID29328019
PMCPMC5933521
OpenAlexW2769305838

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.