Evidence map›Paper›PMID 29312012›Full record

ArticleFrontiers in psychiatry2017

Earthquake Brain: Altered Recognition and Misclassification of Facial Expressions Are Related to Trauma Exposure but Not Posttraumatic Stress Disorder.

Caroline J Bell, Helen C Colhoun, Chris M Frampton, Katie M Douglas, Virginia V W McIntosh, Frances A Carter, Jennifer Jordan, Janet D Carter, Rebekah A Smith, Leila M A Marie and 2 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in psychiatry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

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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

12 authors at 3 institutions in 1 country.

Caroline J BellDepartment of Psychological Medicine, University of Otago, Christchurch, New Zealand.
Helen C ColhounDepartment of Psychological Medicine, University of Otago, Christchurch, New Zealand.
Chris M FramptonDepartment of Psychological Medicine, University of Otago, Christchurch, New Zealand.
Katie M DouglasDepartment of Psychological Medicine, University of Otago, Christchurch, New Zealand.
Virginia V W McIntoshDepartment of Psychology, University of Canterbury, Christchurch, New Zealand.
Frances A CarterDepartment of Psychological Medicine, University of Otago, Christchurch, New Zealand.
Jennifer JordanDepartment of Psychological Medicine, University of Otago, Christchurch, New Zealand.
Janet D CarterDepartment of Psychology, University of Canterbury, Christchurch, New Zealand.
Rebekah A SmithDepartment of Psychology, University of Canterbury, Christchurch, New Zealand.
Leila M A MarieDepartment of Psychology, University of Canterbury, Christchurch, New Zealand.
Alex LoughlinDepartment of Psychology, University of Canterbury, Christchurch, New Zealand.
Richard J PorterDepartment of Psychological Medicine, University of Otago, Christchurch, New Zealand.
University of Canterbury · NZUniversity of Otago · NZCanterbury District Health Board · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe study investigated facial expression recognition (FER) in posttraumatic stress disorder (PTSD) caused by exposure to earthquakes, and in particular whether people with this condition showed a bias toward interpreting facial expressions as threat-related emotions (i.e., as anger, fear, or disgust). The study included a trauma-exposed control group who had been similarly exposed to the earthquakes but had not developed PTSD. We hypothesized that individuals with PTSD would have increased sensitivity to threat-related facial emotions compared with the trauma-exposed control group. This would be shown by increased accuracy in recognition of threat-related emotions and the misinterpretation of neutral expressions to these emotions (i.e., misidentifying them as anger, fear, or disgust). The availability of a group of healthy controls from a previous study who had been tested on a similar task before the earthquakes allowed a further non-exposed comparison.

methodTwenty-eight individuals with PTSD (71% female, mean age 42.8 years) and 89 earthquake-exposed controls (66% female, mean age 50.1 years) completed an FER task, which featured six basic emotions. Further comparisons were made with 50 non-exposed controls (64% female, mean age 38.5 years) who had been tested before the earthquakes.

resultsThere was no difference in sensitivity to threat-related facial expressions (as measured by accuracy in recognition of threat-related facial expressions and the misinterpretation of neutral expressions as threatening) in individuals with PTSD compared with similarly earthquake-exposed controls. Supplementary comparison with an historical, non-exposed control group showed that both earthquake-exposed groups had increased accuracy for the identification of all facial emotions and showed a bias in the misclassification of neutral facial expressions to the threat-related emotions of anger and disgust.

conclusionThese findings suggest that it is exposure to earthquakes and repeated aftershocks, rather than the presence of PTSD that affects FER accuracy and misinterpretation. The importance of these biases in both PTSD and trauma-exposed controls needs further exploration and is an area for future research.

Indexed as

earthquakesfacesfacial recognitionposttraumatic stress disordertrauma-exposed controls

Identifiers

PMID29312012
PMCPMC5732911
OpenAlexW2773553958

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.