Evidence map›Paper›PMID 30265859›Full record

ArticleCortex; a journal devoted to the study of the nervous system and behavior2018

Trauma exposure acutely alters neural function during Pavlovian fear conditioning.

Nathaniel G Harnett, Edward W Ference, Kimberly H Wood, Muriah D Wheelock, Amy J Knight, David C Knight

Abstract read
In one paragraph

Article in Cortex; a journal devoted to the study of the nervous system and behavior, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
3.6field-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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Merkel cell stimulation in fear and sensory signaling.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  4. Review
  5. Neurodevelopmental Pathways from Temperamental Fear to Anxiety.Current topics in behavioral neurosciences · 2025
    Review
  6. Traumatic stress alters neural reactivity to visual stimulation.NPP - digital psychiatry and neuroscience · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Stress-elicited neural activity in young adults varies with childhood sexual abuse.Cortex; a journal devoted to the study of the nervous system and behavior · 2021
    Article
  18. Article
  19. Review
  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

6 authors at 1 institution in 1 country.

Nathaniel G HarnettDepartment of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA.
Edward W FerenceDepartment of Physical Medicine and Rehabilitation, University of Alabama at Birmingham, Birmingham, AL, USA.
Kimberly H WoodDepartment of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA.
Muriah D WheelockDepartment of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA.
Amy J KnightDepartment of Physical Medicine and Rehabilitation, University of Alabama at Birmingham, Birmingham, AL, USA.
David C KnightDepartment of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: knightdc@uab.edu.
University of Alabama at Birmingham · US

Funding

Developmental Neuroscience and Child PsychopathologyT32MH100019 · NIMH · WASHINGTON UNIVERSITY · PI Deanna Barch, JOAN L. LUBY · 2013 to 2026
$4.8M
Neurobiological Mechanisms of Lower Internalizing Disorders in Black AmericansR01MH098348 · NIMH · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI KNIGHT, DAVID C, MRUG, SYLVIE · 2012 to 2016
$2.9M
A Multidimensional Neuroimaging Investigation of Posttraumatic Stress in HumansF99NS105171 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI HARNETT, NATHANIEL G · 2017 to 2017
$39k
NIMH NIH HHS R01 MH098348NIMH NIH HHS T32 MH100019NINDS NIH HHS F99 NS105171
6 · The paper itself

Abstract

Posttraumatic stress disorder (PTSD) is associated with dysfunction of the neural circuitry that supports fear learning and memory processes. However, much of what is known about neural dysfunction in PTSD is based on research in chronic PTSD populations. Less is known about neural function that supports fear learning acutely following trauma exposure. Determining the acute effects of trauma exposure on brain function would provide new insight into the neural processes that mediate the cognitive-affective dysfunction associated with PTSD. Therefore, the present study investigated neural activity that supports fear learning and memory processes in recently Trauma-Exposed (TE) and Non-Trauma-Exposed (NTE) participants. Participants completed a Pavlovian fear conditioning procedure during functional magnetic resonance imaging (fMRI). During fMRI, participants' threat expectancy was continuously monitored. NTE participants showed greater threat expectancy during warning than safety cues, while no difference was observed in the TE group. This finding suggests TE participants overgeneralized the fear association to the safety cue. Further, only the TE group showed a negative relationship between fMRI signal responses within dorsomedial prefrontal cortex (PFC) and threat expectancy during safety cues. These results suggest the dorsomedial PFC mediates overgeneralization of learned fear as an acute result of trauma exposure. Finally, neural activity within the PFC and inferior parietal lobule showed a negative relationship with PTSD symptom severity assessed three months posttrauma. Thus, neural activity measured acutely following trauma exposure predicted future PTSD symptom severity. The present findings elucidate the acute effects of trauma exposure on cognitive-affective function and provide new insight into the neural mechanisms of PTSD.

Indexed as

AdultBrainConditioning, ClassicalFearFemaleGalvanic Skin ResponseHumansMagnetic Resonance ImagingMaleStress Disorders, Post-TraumaticYoung AdultEmotionFearfMRIPTSDTrauma

Identifiers

PMID30265859
PMCPMC6261786
OpenAlexW2888773141

What OpenQuestion holds

Textmetadata
LicenceTDM
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.