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  The human body odor compound androstadienone increases neural interference coupled to higher behavioral costs during an emotional Stroop task

Hornung, J., Kogler, L., Erb, M., Freiherr, J., & Derntl, B. (2017). The human body odor compound androstadienone increases neural interference coupled to higher behavioral costs during an emotional Stroop task. In 18th Conference of Junior Neuroscientists of Tübingen (NeNa 2017) (pp. 11).

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-00FF-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-BB8F-8
Genre: Meeting Abstract

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http://blog.neuromag.net/nena2017.html (Any fulltext)
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Hornung, J, Author
Kogler , L, Author
Erb, M1, 2, Author              
Freiherr, J, Author
Derntl, B, Author
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: The androgen derivative androstadienone (AND) is a substance found in human sweat and thus may act as human chemosignal. AND has been studied with respect to effects on mood states, attractiveness ratings, physiological and neural activation. With the current experiment, we aimed to explore in which way AND affects interference processing during an emotional Stroop task, which used human faces as target and emotional words as distractor stimuli. This was complemented by functional magnetic resonance imaging (fMRI) to unravel the neural mechanism of AND-action. Based on previous accounts we expected AND to increase neural activation in areas commonly implicated in evaluation of emotional face processing and to change neural activation in brain regions linked to interference processing. For this aim, a total of 80 healthy individuals (31 users of oral contraceptives, 21 luteal women) were tested twice on two consecutive days with an emotional Stroop task using fMRI. Our results suggest that AND increases interference processing in brain areas that are heavily recruited during conflict resolution. At the same time, correlation analyses revealed that this neural interference processing was paralleled by higher behavioural costs (reaction times) with higher interference related activation. Furthermore, AND elicited higher activation in regions implicated in emotional face processing including right fusiform gyrus, inferior frontal gyrus and dorsomedial cortex. In this connection, neural activation was not coupled to behavioural outcome. Furthermore, despite previous accounts of increased hypothalamic activation under AND, we were not able to replicate this finding and discuss possible reasons for this discrepancy. To conclude, AND increased neural interference and emotion processing. Furthermore, when correlating neural and behavioural outcome a coupling emerged for interference processing suggesting higher costs in resolving emotional conflicts with stronger interference-related brain activation under AND.

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 Dates: 2017-10
 Publication Status: Published in print
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Title: 18th Conference of Junior Neuroscientists of Tübingen (NeNa 2017)
Place of Event: Schramberg, Germany
Start-/End Date: 2017-10-16 - 2017-10-18

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Title: 18th Conference of Junior Neuroscientists of Tübingen (NeNa 2017)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 11 Identifier: -