Additive effects of threat-of-shock and picture valence on startle reflex modulation
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Altres documents de l'autoria: Bublatzky, Florian; Guerra, Pedro M.; Pastor, M. Carmen; Schupp, Harald T.; Vila, Jaime
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/8033
comunitat-uji-handle3:10234/8636
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Additive effects of threat-of-shock and picture valence on startle reflex modulationData de publicació
2013Editor
Public Library of ScienceCita bibliogràfica
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.0054003Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.plosone.org/article/fetchObject.action?uri=info%3Adoi%2F10.1371%2Fjou ...Versió
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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 ... [+]
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. [-]
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PloS ONE, 2013, Volume 8, Issue 1Drets d'accés
info:eu-repo/semantics/openAccess
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Except where otherwise noted, this item's license is described as © 2013 Bublatzky et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits
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