Reciprocal modulation of eye-blink and pinna-flexion components of startle during reward anticipation

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 punishmen...

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Bibliographic Details
Published inPsychophysiology Vol. 46; no. 6; pp. 1154 - 1159
Main Authors Hackley, Steven A., Muñoz, Miguel Ángel, Hebert, Karen, Valle-Inclán, Fernando, Vila, Jaime
Format Journal Article
LanguageEnglish
Published Malden, USA Blackwell Publishing Inc 01.11.2009
Blackwell Publishing Ltd
Subjects
Adolescent
Attention
Blinking - physiology
Cognition & reasoning
Ear Auricle - physiology
Electromyography
Female
Gambling - psychology
Humans
Male
Musa
Physiological psychology
Post-auricular reflex
Punishment
Reflex, Startle - physiology
Reflexes
Reward
Startle
Taste - physiology
Young Adult
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Summary: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.
Bibliography:istex:8B44A42CFAE480897521F2BDCEB19F1EDFF3A053
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ArticleID:PSYP867
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
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Muñoz, Hebert, Valle‐Inclán, Vila, & Hackley, 2006
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ISSN:0048-5772
1469-8986
1540-5958
DOI:10.1111/j.1469-8986.2009.00867.x