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Additive effects of threat-of-shock and picture valence on startle reflex modulation
dc.contributor.author | Bublatzky, Florian | |
dc.contributor.author | Guerra, Pedro M. | |
dc.contributor.author | Pastor, M. Carmen | |
dc.contributor.author | Schupp, Harald T. | |
dc.contributor.author | Vila, Jaime | |
dc.date.accessioned | 2014-03-17T16:26:26Z | |
dc.date.available | 2014-03-17T16:26:26Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Bublatzky F, Guerra PM, Pastor MC, Schupp HT, Vila J (2013) Additive Effects of Threat-of-Shock and Picture Valence on Startle Reflex Modulation. PLoS ONE 8(1): e54003. doi:10.1371/journal.pone.0054003 | ca_CA |
dc.identifier.uri | http://hdl.handle.net/10234/87549 | |
dc.description.abstract | The present study examined the effects of sustained anticipatory anxiety on the affective modulation of the eyeblink startle reflex. Towards this end, pleasant, neutral and unpleasant pictures were presented as a continuous stream during alternating threat-of-shock and safety periods, which were cued by colored picture frames. Orbicularis-EMG to auditory startle probes and electrodermal activity were recorded. Previous findings regarding affective picture valence and threat-of-shock modulation were replicated. Of main interest, anticipating aversive events and viewing affective pictures additively modulated defensive activation. Specifically, despite overall potentiated startle blink magnitude in threat-of-shock conditions, the startle reflex remained sensitive to hedonic picture valence. Finally, skin conductance level revealed sustained sympathetic activation throughout the entire experiment during threat- compared to safety-periods. Overall, defensive activation by physical threat appears to operate independently from reflex modulation by picture media. The present data confirms the importance of simultaneously manipulating phasic-fear and sustained-anxiety in studying both normal and abnormal anxiety. | ca_CA |
dc.format.extent | 6 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Public Library of Science | ca_CA |
dc.relation.isPartOf | PloS ONE, 2013, Volume 8, Issue 1 | ca_CA |
dc.rights | © 2013 Bublatzky et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited | ca_CA |
dc.rights.uri | http://creativecommons.org/licenses/by-sa/4.0/ | * |
dc.subject | picture valence | ca_CA |
dc.subject | startle reflex | ca_CA |
dc.subject | anticipatory anxiety | ca_CA |
dc.subject | neuromodulation | ca_CA |
dc.title | Additive effects of threat-of-shock and picture valence on startle reflex modulation | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1371/journal.pone.0054003 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | http://www.plosone.org/article/fetchObject.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0054003&representation=PDF | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
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unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited