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2016-10-08 - Colloque/Abstract - Anglais - 1 page(s)

Blekic W., Kandana Arachchige Kendra, Wauthia Erika , Maurage P., Rossignol Mandy , "Neural mechanisms of encoding and maintenance of emotional faces in social anxiety disorder : An ERP study with an N-back task" in 6th Belgian Brain Congress - 8 octobre 2016, MOns, Belgique, 2016

  • Codes CREF : Psychopathologie (DI3513), Neurosciences cognitives (DI4296), Sciences cognitives (DI4290), Psychologie cognitive (DI4211)
  • Unités de recherche UMONS : Psychologie cognitive et Neuropsychologie (P325)
  • Instituts UMONS : Institut de recherche en sciences et technologies du langage (Langage), Institut des Sciences et Technologies de la Santé (Santé)
  • Centres UMONS : Mind & Health (CREMH)

Abstract(s) :

(Anglais) Neural mechanisms of encoding and maintenance of emotional faces in social anxiety disorder : An ERP study with an N-back task Wivine Blekic1*, Kendra G. Kandana Arachchige1, Erika Wauthia1, Pierre Maurage2 and Mandy Rossignol1 1 Université de Mons, Service de Psychologie Cognitive et Neuropsychologie, Belgium 2 Université Catholique de Louvain, Laboratoire de Psychopathologie Expérimentale, Belgium Social Anxiety Disorder (SAD) is associated with an automatic orientation of attention towards emotional stimuli. This phenomenon called attentional bias could reduce the available resources for more complex cognitive processes. In this study, we tested the impact of these attentional biases on the perceptual processing (reflected by the P100, N170 and P200) of angry faces and on the working memory abilities (reflected by the P300) in anxious individuals. To this aim, we compared 24 SAD and 25 control individuals during emotional N-Back tasks where participants were asked to remember either the identity or the emotion (angry, happy or neutral) of three different faces. ERPs potentials were recording during the tasks. Results showed enhanced P200 amplitudes in SAD group in both emotional and identity conditions, in the one and two-back tasks. However, no differences were noticed between both groups regarding to behavioural responses, despite the improved perceptual treatment recorded for all faces. Further studies are needed to clear up the dissociation between ERPs modulations and behavioural responses in SAD population.