Modulation of eyeblink and postauricular reflexes during the anticipation and viewing of food images
| Autor: | Steven A. Hackley, Karen Hebert, Fernando Valle-Inclán |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Endocrine and Autonomic Systems
Cognitive Neuroscience General Neuroscience Experimental and Cognitive Psychology Startle modulation Emotional modulation Reward system Neuropsychology and Physiological Psychology Developmental Neuroscience Neurology Incentive salience Reflex Neuroscience research Valence (psychology) Psychology Biological Psychiatry Cognitive psychology |
| Zdroj: | Psychophysiology. 52:509-517 |
| ISSN: | 0048-5772 |
| DOI: | 10.1111/psyp.12372 |
| Popis: | One of the goals of neuroscience research on the reward system is to fractionate its functions into meaningful subcomponents. To this end, the present study examined emotional modulation of the eyeblink and postauricular components of startle in 60 young adults during anticipation and viewing of food images. Appetitive and disgusting photos served as rewards and punishments in a guessing game. Reflexes evoked during anticipation were not influenced by valence, consistent with the prevailing view that startle modulation indexes hedonic impact (liking) rather than incentive salience (wanting). During the slide-viewing period, postauricular reflexes were larger for correct than incorrect feedback, whereas the reverse was true for blink reflexes. Probes were delivered in brief trains, but only the first response exhibited this pattern. The specificity of affective startle modification makes it a valuable tool for studying the reward system. |
| Databáze: | OpenAIRE |
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