Cited by 851Anxiety, Depression, Psychometrics, Treatment, Cognitive ProcessesNeural and Behavioral Psychology StudiesPsychosomatic Disorders and Their Treatments

Increased Amygdala and Insula Activation During Emotion Processing in Anxiety-Prone Subjects

Stein, Murray B., Simmons, Alan N., Feinstein, Justin S., Paulus, Martin P.·2007·American Journal of Psychiatry

Abstract

OBJECTIVE: Increased amygdala reactivity during processing of certain types of emotional stimuli (e.g., fear, anger) has been observed in patients with anxiety disorders such as social phobia and posttraumatic stress disorder (PTSD). It is uncertain whether this heightened amygdala reactivity is specific to treatment-seeking patients with anxiety disorders or is a general feature of individuals with increased anxiety-related temperamental traits. METHOD: Thirty-two physically healthy subjects 18-21 years old were recruited from a large pool of college students. Of these, 16 were chosen on the basis of scoring in the upper-15th percentile on a measure of trait anxiety (anxiety-prone group), and 16 were chosen on the basis of scoring in the normative range (40th-60th percentile). Subjects participated in functional magnetic resonance imaging (fMRI) during an emotion face assessment task that has been shown to reliably engage amygdala and associated limbic structures. RESULTS: Anxiety-prone subjects had significantly greater bilateral amygdala and insula activation to emotional faces than did the anxiety-normative comparison subjects. Higher scores on several measures assessing anxiety proneness (e.g., neuroticism, trait anxiety, and anxiety sensitivity) were associated with greater activation of the amygdala (predominantly left-sided) and the anterior insula (bilateral). CONCLUSIONS: Increased amygdala and insula reactivity to certain types of emotional processing is seen in young adults with increased anxiety-related temperamental traits. Therefore, this brain emotion-processing profile may be a functional endophenotype for proneness to (certain kinds of) anxiety disorders.

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Crossref · 10.1176/ajp.2007.164.2.318

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Authors
Stein, M. B., Simmons, A. N., Feinstein, J. S., & Paulus, M. P.
Affiliations
University of California San Diego (US)
Venue
American Journal of Psychiatry
Published
2007-02
Volume
164
Issue
2
Pages
318-327
ISSN
  • 0002-953X (ISSN-L)
  • 1535-7228
OpenAlex
W2137811349
Cited by
851
References
22
Citations by year
2026: 7 · 2025: 26 · 2024: 41 · 2023: 33 · 2022: 44 · 2021: 46 · 2020: 24 · 2019: 49 · 2018: 43 · 2017: 60 · 2016: 47 · 2015: 66 · 2014: 43 · 2013: 62 · 2012: 47
FWCI
66.96
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (MH-64122, MH 65413, K24MH064122, R01MH065413)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Psychosomatic Disorders and Their Treatments
Keywords
amygdala activation, anterior insula, emotional processing, anxiety proneness, trait anxiety, neuroticism, anxiety sensitivity, emotional face processing, endophenotypes, anxiety disorders, young adults
MeSH terms
Adolescent, Adult, Amygdala, Anger, Anxiety Disorders, Cerebral Cortex, Disease Susceptibility, Emotions, Facial Expression, Fear, Female, Humans, Functional Laterality, Magnetic Resonance Imaging, Male, Oxygen, Phobic Disorders, Psychiatric Status Rating Scales, Social Perception, Stress Disorders, Post-Traumatic, Visual Perception, Diagnostic and Statistical Manual of Mental Disorders

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