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    Adapting effects of emotional expression in anxiety: evidence for an enhanced late positive potential

    Richards, Anne and Holmes, A. and Pell, Philip J. and Bethell, E. (2013) Adapting effects of emotional expression in anxiety: evidence for an enhanced late positive potential. Social Neuroscience 8 (6), pp. 650-664. ISSN 1747-0919.

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    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 behavioural classification of morphs towards ‘fear’ following adaptation to neutral compared to adaptation to fear with a non-significant trend towards 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 ~400 ms post-stimulus onset, in the high but not the low anxiety group following adaptation to neutral compared to fear. In addition, as the size of the behavioural 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 late positive potential deflection.


    Item Type: Article
    Additional Information: This is an Author's Accepted Manuscript of an article published in Social Neuroscience, Vol. 8(6), pp. 650-664, Nov/Dec 2013 [copyright Taylor & Francis], available online at:
    Keyword(s) / Subject(s): Adaptation, Anxiety, Depression, ERPs, LPP
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Psychological Sciences
    Depositing User: Anne Richards
    Date Deposited: 04 Feb 2014 11:08
    Last Modified: 02 Aug 2023 17:09


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