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Genes, brain, and emotionsInterdisciplinary and Translational Perspectives$
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Andrei C. Miu, Judith R. Homberg, and Klaus-Peter Lesch

Print publication date: 2019

Print ISBN-13: 9780198793014

Published to Oxford Scholarship Online: June 2019

DOI: 10.1093/oso/9780198793014.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 28 October 2021

Genetic effects on peripheral psychophysiological measures of emotion processing

Genetic effects on peripheral psychophysiological measures of emotion processing

(p.262) Chapter 18 Genetic effects on peripheral psychophysiological measures of emotion processing
Genes, brain, and emotions

Annette Conzelmann

Paul Pauli

Alexander Prehn-Kristensen

Tobias Renner

Oxford University Press

This chapter gives an overview of genetic effects on two peripheral psychophysiological measures of emotion processing in humans: the startle reflex and electrodermal activity. The affect modulation of the startle reflex is an indicator of the valence dimension of emotion processing, whereas electrodermal activity (skin conductance level and responses) reflects the arousal dimension of emotion processing. Both measures have shown potential in studies of genetic effects on emotion processing, considering that they are less susceptible to social influence in comparison to subjective measures of emotion, they are also easily accessible in large samples and the affective startle, in particular, can be also measured in animals. However, there are also conflicting discussions about their usability. Further studies should follow in different laboratories and with different paradigms to verify the reliability and generalizability of genetic association reported to date. In addition, larger sample sizes would be necessary in order to be able to investigate gene×gene and gene×environment effects in healthy volunteers and clinical samples.

Keywords:   psychophysiology, genetics, startle, skin conductance, emotion

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