Cited by 28Posttraumatic Stress Disorder ResearchAnxiety, Depression, Psychometrics, Treatment, Cognitive ProcessesFace Recognition and Perception

Specific amygdala response to masked fearful faces in post-traumatic stress relative to other anxiety disorders

Neumeister, P., Feldker, K., Heitmann, C. Y., Buff, C., Brinkmann, L., Bruchmann, M., Straube, T.·2018·Psychological Medicine

Abstract

Background: Altered amygdala activation to fear-related stimuli has been proposed to be a potential neural correlate of heightened threat sensitivity in anxiety- and stress-related disorders. However, the role of stimulus awareness and disorder specificity remains widely unclear. Here we investigated amygdala responses to conscious and unconscious fearful faces in patients suffering from panic disorder (PD), generalized anxiety disorder (GAD), or post-traumatic stress disorder (PTSD) and in a large sample of healthy controls (HC). Methods: During event-related functional magnetic resonance imaging participants (n = 120; 20 PD, 20 GAD, 20 PTSD, 60 HC) were confronted with briefly presented fearful faces, neutral faces, and non-faces in a backward masking paradigm. The design allowed for the analysis of trial-by-trial face detection performance and amygdala responses to fearful v. neutral faces. Results: All participants exhibited increased amygdala activation to fearful v. neutral faces during conscious trials. Specifically during unconscious face processing, the PTSD, compared with all other groups, showed higher right basolateral (BLA) amygdala activity to fearful v. neutral faces. Conclusions: The present study shows that BLA amygdala hyperactivity during unconscious, but not conscious, processing of fearful faces differentiates PTSD from the investigated disorders. This finding suggests an automatic and specific neural hyper-responsivity to general fear cues in PTSD and supports the idea of categorical differences between PTSD and other anxiety-related disorders.

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Crossref · 10.1017/s0033291717002513

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  • In response to stressful stimuli such as fearful faces, patients with PTSD showed higher activation of the basolateral amygdala during unconscious face processing compared to healthy controls and patients with panic disorder and generalized anxiety disorder.

    “Further, in response to stressful stimuli as fearful faces, patients with PTSD showed a higher activation of the basolateral amygdala during unconscious face processing compared to healthy controls as well as patients with panic disorder and generalized anxiety disorder (159).”

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Authors
Neumeister, P., Feldker, K., Heitmann, C. Y., Buff, C., Brinkmann, L., Bruchmann, M., & Straube, T.
Affiliations
University Hospital Münster (DE)
Corresponding author
Neumeister, P.
Venue
Psychological Medicine
Published
2017-09-27
Volume
48
Issue
7
Pages
1209-1217
ISSN
  • 0033-2917 (ISSN-L)
  • 1469-8978
OpenAlex
W2760561242
Cited by
28
References
49
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 7 · 2019: 6 · 2018: 2
FWCI
5.08
Type
journal article
Language
en
Open access
closed
Locations
  • Psychological Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
Keywords
post-traumatic stress disorder, amygdala, basolateral amygdala, fearful faces, backward masking, threat sensitivity, panic disorder, generalized anxiety disorder, anxiety disorders, face detection
MeSH terms
Adolescent, Adult, Amygdala, Anxiety Disorders, Cues, Facial Expression, Fear, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Reaction Time, Regression Analysis, Stress Disorders, Post-Traumatic, Case-Control Studies, Panic Disorder, Young Adult

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