Biological Clocks and Rhythms of Anger and Aggression

The body’s internal timekeeping system is an under-recognized but highly influential force in behaviors and emotions including anger and reactive aggression. Predictable cycles or rhythms in behavior are expressed on several different time scales such as circadian (circa diem, or approximately 24-h...

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Main Authors: Suzanne Hood, Shimon Amir
Format: Article
Language:English
Published: Frontiers Media S.A. 2018-01-01
Series:Frontiers in Behavioral Neuroscience
Subjects:
Online Access:http://journal.frontiersin.org/article/10.3389/fnbeh.2018.00004/full
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author Suzanne Hood
Shimon Amir
author_facet Suzanne Hood
Shimon Amir
author_sort Suzanne Hood
collection DOAJ
description The body’s internal timekeeping system is an under-recognized but highly influential force in behaviors and emotions including anger and reactive aggression. Predictable cycles or rhythms in behavior are expressed on several different time scales such as circadian (circa diem, or approximately 24-h rhythms) and infradian (exceeding 24 h, such as monthly or seasonal cycles). The circadian timekeeping system underlying rhythmic behaviors in mammals is constituted by a network of clocks distributed throughout the brain and body, the activity of which synchronizes to a central pacemaker, or master clock. Our daily experiences with the external environment including social activity strongly influence the exact timing of this network. In the present review, we examine evidence from a number of species and propose that anger and reactive aggression interact in multiple ways with circadian clocks. Specifically, we argue that: (i) there are predictable rhythms in the expression of aggression and anger; (ii) disruptions of the normal functioning of the circadian system increase the likelihood of aggressive behaviors; and (iii) conversely, chronic expression of anger can disrupt normal rhythmic cycles of physiological activities and create conditions for pathologies such as cardiovascular disease to develop. Taken together, these observations suggest that a comprehensive perspective on anger and reactive aggression must incorporate an understanding of the role of the circadian timing system in these intense affective states.
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spelling doaj.art-730063361c9c4b2c950016ff54c0c2f42022-12-22T00:03:24ZengFrontiers Media S.A.Frontiers in Behavioral Neuroscience1662-51532018-01-011210.3389/fnbeh.2018.00004313485Biological Clocks and Rhythms of Anger and AggressionSuzanne Hood0Shimon Amir1Department of Psychology, Bishop’s University, Sherbrooke, QC, CanadaDepartment of Psychology, Concordia University, Montreal, QC, CanadaThe body’s internal timekeeping system is an under-recognized but highly influential force in behaviors and emotions including anger and reactive aggression. Predictable cycles or rhythms in behavior are expressed on several different time scales such as circadian (circa diem, or approximately 24-h rhythms) and infradian (exceeding 24 h, such as monthly or seasonal cycles). The circadian timekeeping system underlying rhythmic behaviors in mammals is constituted by a network of clocks distributed throughout the brain and body, the activity of which synchronizes to a central pacemaker, or master clock. Our daily experiences with the external environment including social activity strongly influence the exact timing of this network. In the present review, we examine evidence from a number of species and propose that anger and reactive aggression interact in multiple ways with circadian clocks. Specifically, we argue that: (i) there are predictable rhythms in the expression of aggression and anger; (ii) disruptions of the normal functioning of the circadian system increase the likelihood of aggressive behaviors; and (iii) conversely, chronic expression of anger can disrupt normal rhythmic cycles of physiological activities and create conditions for pathologies such as cardiovascular disease to develop. Taken together, these observations suggest that a comprehensive perspective on anger and reactive aggression must incorporate an understanding of the role of the circadian timing system in these intense affective states.http://journal.frontiersin.org/article/10.3389/fnbeh.2018.00004/fullangeraggressioncircadian rhythminfradian rhythmclock genes
spellingShingle Suzanne Hood
Shimon Amir
Biological Clocks and Rhythms of Anger and Aggression
Frontiers in Behavioral Neuroscience
anger
aggression
circadian rhythm
infradian rhythm
clock genes
title Biological Clocks and Rhythms of Anger and Aggression
title_full Biological Clocks and Rhythms of Anger and Aggression
title_fullStr Biological Clocks and Rhythms of Anger and Aggression
title_full_unstemmed Biological Clocks and Rhythms of Anger and Aggression
title_short Biological Clocks and Rhythms of Anger and Aggression
title_sort biological clocks and rhythms of anger and aggression
topic anger
aggression
circadian rhythm
infradian rhythm
clock genes
url http://journal.frontiersin.org/article/10.3389/fnbeh.2018.00004/full
work_keys_str_mv AT suzannehood biologicalclocksandrhythmsofangerandaggression
AT shimonamir biologicalclocksandrhythmsofangerandaggression