Insula response to unpredictable and predictable aversiveness in individuals with panic disorder and comorbid depression

BackgroundPrior studies suggest that hyperactive insula responding to unpredictable aversiveness is a core feature of anxiety disorders. However, no study to date has investigated the neural correlates of unpredictable aversiveness in those with panic disorder (PD) with comorbid major depressive disorder (MDD). The aim of the current study was to examine group differences in neural responses to unpredictable and predictable aversiveness in 41 adults with either 1) current PD with comorbid MDD (PD-MDD), 2) current MDD with no lifetime diagnosis of an anxiety disorder (MDD-only), or 3) no lifetime diagnosis of psychopathology. All participants completed a functional magnetic resonance imaging (fMRI) scan while viewing temporally predictable or unpredictable negative or neutral images.FindingsThe results indicated that individuals with PD-MDD exhibited greater bilateral insula activation to unpredictable aversiveness compared with controls and individuals with MDD-only (who did not differ). There were no group differences in insula activation to predictable aversiveness.ConclusionsThese findings add to a growing literature highlighting the role of the insula in the pathophysiology of anxiety disorders.

• Publication year

  2014

• Venue

  Biology of Mood & Anxiety Disorders

• Publication date

  2014-10-07

• Fields of study

  Medicine, Psychology

• Identifiers
  DOI 10.1186/2045-5380-4-9PMID 25337388PMCID 4204386
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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