These data were collected while the second author was a visiting scholar at the University of Missouri, Columbia. Preliminary results were presented as a poster at the annual meeting of the Society for Psychophysiological Research and were published as a proceedings abstract (Muñoz, Hebert, Valle-Inclán, Vila, & Hackley, 2006).
Reciprocal modulation of eye-blink and pinna-flexion components of startle during reward anticipation
Article first published online: 1 JUL 2009
Copyright © 2009 Society for Psychophysiological Research
Volume 46, Issue 6, pages 1154–1159, November 2009
How to Cite
Hackley, S. A., Muñoz, M. Á., Hebert, K., Valle-Inclán, F. and Vila, J. (2009), Reciprocal modulation of eye-blink and pinna-flexion components of startle during reward anticipation. Psychophysiology, 46: 1154–1159. doi: 10.1111/j.1469-8986.2009.00867.x
- Issue published online: 12 OCT 2009
- Article first published online: 1 JUL 2009
- (Received July 2, 2008; Accepted January 25, 2009)
- Post-auricular reflex;
Because expectancies play a central role in current theories of dopaminergic neuron function, it is important to develop measures of reward anticipation processes. In the present study, reflexogenic bursts of white noise were presented to 39 healthy young adults as they awaited rewards and punishments in a gambling-like task. The rewards were small pieces of chocolate; the punishments, segments of bitter-tasting banana peel. Consistent with prior research on affective valence, postauricular reflexes were larger prior to rewards than punishments, whereas the reverse was true for acoustic blink reflexes. We theorized that potentiation of the postauricular reflex prior to consuming appetizing food is related to the priming of ear-retraction musculature during nursing in our remote ancestors.