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dc.contributor.authorPerakakis, Pandelis
dc.contributor.authorMocaiber, Izabela
dc.contributor.authorGarcia Pereira, Mirtes
dc.contributor.authorMachado, Walter Pinheiro
dc.contributor.authorVolchan, Eliane
dc.contributor.authorDe Oliveira, Letícia
dc.contributor.authorVila, Jaime
dc.date.accessioned2012-10-10T13:15:52Z
dc.date.available2012-10-10T13:15:52Z
dc.date.issued2011-09
dc.identifier.citationInternational Journal of Psychophysiology (Sep. 2011), vol. 81, no. 3, 299–304ca_CA
dc.identifier.issn0167-8760
dc.identifier.urihttp://hdl.handle.net/10234/48438
dc.description.abstractEmotional reactions to threatening situations can be either advantageous for human adaptation or unfavorable for physical and mental health if sustained over prolonged periods of time. These contrasting effects mostly depend on the individual's capacity for emotion regulation. It has been shown, for example, that changing appraisal can alter the course of emotional processing. In the present study, the influence of stimulus appraisal over cardiac reactivity to briefly presented (200 ms) mutilation pictures was tested in the context of an affective classification task. Heart rate and reaction time of twenty-four undergraduate students were monitored during the presentation of pictures (neutral or mutilated bodies) in successive blocks. In one condition (real), participants were told that the pictures depicted real events. In the other condition (fictitious), they were told that the pictures were taken from movie scenes. As expected, the results showed a more pronounced bradycardia to mutilation pictures, in comparison to neural pictures, in the real context. In the fictitious context, a significant attenuation of the emotional modulation (defensive bradycardia) was observed. However, this attenuation seemed to be transient because it was only observed in the first presentation block of the fictitious context. Reaction time to classify mutilation pictures, compared to neutral pictures, was slower in both contexts, reflecting the privileged processing of emotionally laden material. The present findings show that even briefly presented mutilation pictures elicit a differential cardiac reactivity and modulate behavioral performance. Importantly, changing stimulus appraisal attenuates the emotional modulation of cardiac reactivity (defensive bradycardia).ca_CA
dc.format.extent7 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherElsevier B.V.ca_CA
dc.rights© 2011 Elsevier B.V.ca_CA
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/*
dc.subjectHeart rateca_CA
dc.subjectReaction timeca_CA
dc.subjectMutilation picturesca_CA
dc.subjectAppraisalca_CA
dc.titleStimulus appraisal modulates cardiac reactivity to briefly presented mutilation picturesca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1016/j.ijpsycho.2011.07.014
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_CA
dc.relation.publisherVersionhttp://www.sciencedirect.com/science/article/pii/S0167876011002285ca_CA


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