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Updated: Jul 2, 2026

Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat
Published on: September 12, 2014
Anxiety and the neural processing of threat in faces
Christopher Sewell1, Romina Palermo, Carmen Atkinson
1Macquarie Centre for Cognitive Science, Macquarie University, New South Wales, Australia. csewell@maccs.mq.edu.au
Abstract:
This study examined the relationship between social anxiety and the neural processing of threat in faces. Twenty-one adults with different levels of society anxiety were tested for their event-related potential responses to unattended threatening and nonthreatening faces, presented upright and upside-down, at three points in time: 160-210 ms (vertex positive potential), 300-350 ms (N3) and 440-500 ms (P3). Social anxiety was significantly correlated with the size of P3 to upright angry faces but not happy faces. This supports the theory that anxiety diverts attention towards goal-irrelevant threat cues, and suggests that this threat-related shift in attention starts to affect the processing of faces at 440-500 ms.
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