Serotonin depletion amplifies distinct human social emotions as a function of individual differences in personality

Abstract Serotonin is involved in a wide range of mental capacities essential for navigating the social world, including emotion and impulse control. Much recent work on serotonin and social functioning has focused on decision-making. Here we investigated the influence of serotonin on human emotiona...

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Main Authors: Jonathan W. Kanen, Fréderique E. Arntz, Robyn Yellowlees, Rudolf N. Cardinal, Annabel Price, David M. Christmas, Annemieke M. Apergis-Schoute, Barbara J. Sahakian, Trevor W. Robbins
Format: Article
Language:English
Published: Nature Publishing Group 2021-02-01
Series:Translational Psychiatry
Online Access:https://doi.org/10.1038/s41398-020-00880-9
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author Jonathan W. Kanen
Fréderique E. Arntz
Robyn Yellowlees
Rudolf N. Cardinal
Annabel Price
David M. Christmas
Annemieke M. Apergis-Schoute
Barbara J. Sahakian
Trevor W. Robbins
author_facet Jonathan W. Kanen
Fréderique E. Arntz
Robyn Yellowlees
Rudolf N. Cardinal
Annabel Price
David M. Christmas
Annemieke M. Apergis-Schoute
Barbara J. Sahakian
Trevor W. Robbins
author_sort Jonathan W. Kanen
collection DOAJ
description Abstract Serotonin is involved in a wide range of mental capacities essential for navigating the social world, including emotion and impulse control. Much recent work on serotonin and social functioning has focused on decision-making. Here we investigated the influence of serotonin on human emotional reactions to social conflict. We used a novel computerised task that required mentally simulating social situations involving unjust harm and found that depleting the serotonin precursor tryptophan—in a double-blind randomised placebo-controlled design—enhanced emotional responses to the scenarios in a large sample of healthy volunteers (n = 73), and interacted with individual differences in trait personality to produce distinctive human emotions. Whereas guilt was preferentially elevated in highly empathic participants, annoyance was potentiated in those high in trait psychopathy, with medium to large effect sizes. Our findings show how individual differences in personality, when combined with fluctuations of serotonin, may produce diverse emotional phenotypes. This has implications for understanding vulnerability to psychopathology, determining who may be more sensitive to serotonin-modulating treatments, and casts new light on the functions of serotonin in emotional processing.
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spelling doaj.art-256c4a1ae25e48f6a384b462065ecd092022-12-21T22:21:07ZengNature Publishing GroupTranslational Psychiatry2158-31882021-02-0111111210.1038/s41398-020-00880-9Serotonin depletion amplifies distinct human social emotions as a function of individual differences in personalityJonathan W. Kanen0Fréderique E. Arntz1Robyn Yellowlees2Rudolf N. Cardinal3Annabel Price4David M. Christmas5Annemieke M. Apergis-Schoute6Barbara J. Sahakian7Trevor W. Robbins8Department of Psychology, University of CambridgeDepartment of Psychology, University of CambridgeDepartment of Psychology, University of CambridgeBehavioural and Clinical Neuroscience Institute, University of CambridgeDepartment of Psychiatry, University of CambridgeDepartment of Psychiatry, University of CambridgeBehavioural and Clinical Neuroscience Institute, University of CambridgeBehavioural and Clinical Neuroscience Institute, University of CambridgeDepartment of Psychology, University of CambridgeAbstract Serotonin is involved in a wide range of mental capacities essential for navigating the social world, including emotion and impulse control. Much recent work on serotonin and social functioning has focused on decision-making. Here we investigated the influence of serotonin on human emotional reactions to social conflict. We used a novel computerised task that required mentally simulating social situations involving unjust harm and found that depleting the serotonin precursor tryptophan—in a double-blind randomised placebo-controlled design—enhanced emotional responses to the scenarios in a large sample of healthy volunteers (n = 73), and interacted with individual differences in trait personality to produce distinctive human emotions. Whereas guilt was preferentially elevated in highly empathic participants, annoyance was potentiated in those high in trait psychopathy, with medium to large effect sizes. Our findings show how individual differences in personality, when combined with fluctuations of serotonin, may produce diverse emotional phenotypes. This has implications for understanding vulnerability to psychopathology, determining who may be more sensitive to serotonin-modulating treatments, and casts new light on the functions of serotonin in emotional processing.https://doi.org/10.1038/s41398-020-00880-9
spellingShingle Jonathan W. Kanen
Fréderique E. Arntz
Robyn Yellowlees
Rudolf N. Cardinal
Annabel Price
David M. Christmas
Annemieke M. Apergis-Schoute
Barbara J. Sahakian
Trevor W. Robbins
Serotonin depletion amplifies distinct human social emotions as a function of individual differences in personality
Translational Psychiatry
title Serotonin depletion amplifies distinct human social emotions as a function of individual differences in personality
title_full Serotonin depletion amplifies distinct human social emotions as a function of individual differences in personality
title_fullStr Serotonin depletion amplifies distinct human social emotions as a function of individual differences in personality
title_full_unstemmed Serotonin depletion amplifies distinct human social emotions as a function of individual differences in personality
title_short Serotonin depletion amplifies distinct human social emotions as a function of individual differences in personality
title_sort serotonin depletion amplifies distinct human social emotions as a function of individual differences in personality
url https://doi.org/10.1038/s41398-020-00880-9
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