Additive effects of threat-of-shock and picture valence on startle reflex modulation
View/ Open
Impact
Scholar |
Other documents of the author: Bublatzky, Florian; Guerra, Pedro M.; Pastor, M. Carmen; Schupp, Harald T.; Vila, Jaime
Metadata
Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/8033
comunitat-uji-handle3:10234/8636
comunitat-uji-handle4:
INVESTIGACIONMetadata
Title
Additive effects of threat-of-shock and picture valence on startle reflex modulationDate
2013Publisher
Public Library of ScienceBibliographic 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.0054003Type
info:eu-repo/semantics/articlePublisher version
http://www.plosone.org/article/fetchObject.action?uri=info%3Adoi%2F10.1371%2Fjou ...Version
info:eu-repo/semantics/publishedVersionSubject
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 ... [+]
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. [-]
Is part of
PloS ONE, 2013, Volume 8, Issue 1Rights
info:eu-repo/semantics/openAccess
This item appears in the folowing collection(s)
- PSB_Articles [1330]
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
unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited