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Adapting effects of emotional expression in anxiety: Evidence for an enhanced Late Positive Potential

Richardson, A, Holmes, A, Pell, P and Bethell, EJ (2013) Adapting effects of emotional expression in anxiety: Evidence for an enhanced Late Positive Potential. Social Neuroscience, 8 (6). ISSN 1747-0927

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Abstract

An adaptation paradigm was used to investigate the influence of a previously experienced visual context on the interpretation of ambiguous emotional expressions. Affective classification of fear-neutral ambiguous expressions was performed following repeated exposure to either fearful or neutral faces. There was a shift in the behavioral classification of morphs toward fear following adaptation to neutral compared to adaptation to fear with a nonsignificant trend toward the high-anxiety group compared to the low being more influenced by the context. The event-related potential (ERP) data revealed a more pronounced late positive potential (LPP), beginning at similar to 400ms poststimulus onset, in the high but not the low-anxiety group following adaptation to neutral compared to fear. In addition, as the size of the behavioral adaptation increased, there was a linear increase in the magnitude of the late-LPP. However, context-sensitivity effects are not restricted to trait anxiety, with similar effects observed with state anxiety and depression. These data support the proposal that negative moods are associated with increased sensitivity to visual contextual influences from top-down elaborative modulations, as reflected in an enhanced LPP deflection.

Item Type: Article
Additional Information: “This is an Accepted Manuscript of an article published by Taylor & Francis in Social Neuroscience on 31 October 2013, available online: https://doi.org/10.1080/17470919.2013.854273.”
Uncontrolled Keywords: 1109 Neurosciences, 1702 Cognitive Science, 1701 Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: Pharmacy & Biomolecular Sciences
Publisher: Taylor & Francis (Routledge)
Date Deposited: 13 Mar 2018 17:46
Last Modified: 13 Mar 2018 17:46
DOI or Identification number: 10.1080/17470919.2013.854273
URI: http://researchonline.ljmu.ac.uk/id/eprint/8274

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