Isolating neural components of threat bias in pediatric anxiety

Jennifer C Britton, Yair Bar-Haim, Frederick W. Carver, Tom Holroyd, Maxine A. Norcross, Allison Detloff, Ellen Leibenluft, Monique Ernst, Daniel S. Pine

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Background: Attention biases toward threat are often detected in individuals with anxiety disorders. Threat biases can be measured experimentally through dot-probe paradigms, in which individuals detect a probe following a stimulus pair including a threat. On these tasks, individuals with anxiety tend to detect probes that occur in a location previously occupied by a threat (i.e., congruent) faster than when opposite threats (i.e., incongruent). In pediatric anxiety disorders, dot-probe paradigms detect abnormal attention biases toward threat and abnormal ventrolateral prefrontal cortex (vlPFC) function. However, it remains unclear if this aberrant vlPFC activation occurs while subjects process threats (e.g., angry faces) or, alternatively, while they process and respond to probes. This magnetoencephalography (MEG) study was designed to answer this question. Methods: Adolescents with either generalized anxiety disorder (GAD, n = 17) or no psychiatric diagnosis (n = 25) performed a dot-probe task involving angry and neutral faces while MEG data were collected. Synthetic Aperture Magnetometry (SAM) beamformer technique was used to determine whether there were group differences in power ratios while subjects processed threats (i.e., angry vs. neutral faces) or when subjects responded to incongruent versus. congruent probes. Results: Group differences in vlPFC activation during the response period emerged with a 1-30 Hz frequency band. No group differences in vlPFC activation were detected in response to angry-face cues. Conclusions: In the dot-probe task, anxiety-related perturbations in vlPFC activation reflect abnormal attention control when responding to behaviorally relevant probes, but not to angry faces. Given that motor responses to these probes are used to calculate threat bias, this study provides insight into the pathophysiology reflected in this commonly used marker of anxiety. In addition, this finding may inform the development of novel anxiety-disorder treatments targeting the vlPFC to enhance attention control to task-relevant demands.

Original languageEnglish
Pages (from-to)678-686
Number of pages9
JournalJournal of Child Psychology and Psychiatry and Allied Disciplines
Volume53
Issue number6
DOIs
StatePublished - Jun 1 2012
Externally publishedYes

Fingerprint

Prefrontal Cortex
Anxiety
Pediatrics
Anxiety Disorders
Magnetoencephalography
Magnetometry
Mental Disorders
Cues

Keywords

  • attention
  • magnetoencephalography
  • ventrolateral prefrontal cortex

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Pediatrics, Perinatology, and Child Health
  • Developmental and Educational Psychology
  • Medicine(all)

Cite this

Isolating neural components of threat bias in pediatric anxiety. / Britton, Jennifer C; Bar-Haim, Yair; Carver, Frederick W.; Holroyd, Tom; Norcross, Maxine A.; Detloff, Allison; Leibenluft, Ellen; Ernst, Monique; Pine, Daniel S.

In: Journal of Child Psychology and Psychiatry and Allied Disciplines, Vol. 53, No. 6, 01.06.2012, p. 678-686.

Research output: Contribution to journalArticle

Britton, JC, Bar-Haim, Y, Carver, FW, Holroyd, T, Norcross, MA, Detloff, A, Leibenluft, E, Ernst, M & Pine, DS 2012, 'Isolating neural components of threat bias in pediatric anxiety', Journal of Child Psychology and Psychiatry and Allied Disciplines, vol. 53, no. 6, pp. 678-686. https://doi.org/10.1111/j.1469-7610.2011.02503.x
Britton, Jennifer C ; Bar-Haim, Yair ; Carver, Frederick W. ; Holroyd, Tom ; Norcross, Maxine A. ; Detloff, Allison ; Leibenluft, Ellen ; Ernst, Monique ; Pine, Daniel S. / Isolating neural components of threat bias in pediatric anxiety. In: Journal of Child Psychology and Psychiatry and Allied Disciplines. 2012 ; Vol. 53, No. 6. pp. 678-686.
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