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dc.contributor.authorMahabir, Megan
dc.contributor.authorTucholka, Alan
dc.contributor.authorShin, Lisa M.
dc.contributor.authorEtienne, Pierre
dc.contributor.authorBrunet, Alain
dc.date.accessioned2019-05-09T15:23:59Z
dc.date.available2019-05-09T15:23:59Z
dc.date.issued2015
dc.identifier.urihttp://hdl.handle.net/1974/26186
dc.description.abstractIndividuals with post-traumatic stress disorder (PTSD) exhibit exaggerated emotional reactions to threatening stimuli, which may represent deregulated fear-conditioning, associated with long-term adaptations in the sympathetic nervous system. Within a repeated measures design, functional magnetic resonance imaging (fMRI) was employed to investigate neural responses to threat in PTSD participants (N=7), during the presentation of emotional facial expressions. Scans were separated by 6 weekly reconsolidation impairment treatment sessions, consisting of traumatic memory reactivation under the influence of propranolol. Greater activation before versus after treatment emerged in the thalamus and amygdala during fearful versus neutral face processing. Furthermore, participants showed greater activation after versus before treatment in the right anterior cingulate, during fearful relative to happy face processing. PTSD symptoms significantly improved (d = 1.75), post-treatment. These preliminary results suggest that aberrant emotional responding is modulated by noradrenergic plasticity within the amygdala-prefrontal cortex circuit, a neural substrate for the pharmacological treatment of PTSD.en_US
dc.language.isoenen_US
dc.subjectDriven Traumatic Imageryen_US
dc.subjectPTSDen_US
dc.subjectPost-Traumatic Stress Disorderen_US
dc.subjectReconsolidationen_US
dc.subjectNeuroimagingen_US
dc.subjectMemoryen_US
dc.subjectPropranololen_US
dc.titleEmotional Face Processing in Post-Traumatic Stress Disorder after Reconsolidation Impairment Using Propranolol: A Pilot fMRI Studyen_US
dc.typejournal articleen_US
dc.identifier.doihttps://doi.org/10.1016/j.janxdis.2015.10.004


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