This research was supported by National Institute of Mental Health grant MH46861. Completion of the manuscript was partially supported by a Purdue Research Foundation Summer Faculty Grant. I thank Keith Berg. Ed Cook, Lois Putnam, Bob Simons, and an anonymous reviewer for valuable comments on previous drafts of this manuscript.
Emotional modulation of skin conductance and eyeblink responses to a startle probe
Article first published online: 30 JAN 2007
Volume 32, Issue 4, pages 351–357, July 1995
How to Cite
VRANA, S. R. (1995), Emotional modulation of skin conductance and eyeblink responses to a startle probe. Psychophysiology, 32: 351–357. doi: 10.1111/j.1469-8986.1995.tb01217.x
- Issue published online: 30 JAN 2007
- Article first published online: 30 JAN 2007
- (Received January 10, 1994; Accepted August 30, 1994)
- Reflex modulation;
- Skin conductance;
- Heart rate;
- Facial EMG
In this study, I examined emotional modulation of the eyeblink, skin conductance, and cardiac responses to an acoustic startle (103 dB[A] white noise) probe. Twenty-five female and 17 male undergraduates imagined pleasant, neutral, and fearful situations in a tone-cued imagery procedure. Both the eyeblink and skin conductance responses to startle probes were potentiated (larger magnitude, shorter latency) during fear as compared with neutral and pleasant imagery. The amount of emotional modulation in these two response systems was significantly correlated both between and within subjects. The startle probe interrupted ongoing cardiac deceleration during the imagery task, but this interruption was not related to the emotional content of imagery.