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Summary: Neuroimaging reveals lower activation in the dorsolateral prefrontal cortex and angular gyrus in teenage girls with conduct disorder. Findings suggest that a reduction in prefrontal brain regions and functional connectivity during effortful emotional regulations contribute to behaviors associated with antisocial behavior in teenage girls.
Source: University of Zurich
Becoming a teenager means going through a variety of physical and behavioral changes in the context of heightened emotionality. For everyday social functioning, as well as for personal physical and mental well-being, it is important that teenagers are able to recognize, process and control these emotions. For young people who are diagnosed with conduct disorder, this process is difficult, and may lead to antisocial or aggressive reactions that clearly lie outside the age-appropriate norms, e.g. swearing, hitting, stealing and lying. An international team of researchers from Switzerland, Germany and England have been able to demonstrate using functional magnetic resonance imaging that these behavioral difficulties are reflected in the brain activity.
Neural explanation for social deficits
The study involved almost 60 female teenagers aged between 15 and 18 who were asked to try to actively regulate their emotions while the researchers measured their brain activity. Half of the group had previously been diagnosed with conduct disorder, while the other half showed typical social development for their age. In the girls with problematic social behavior, less activity was seen in the prefrontal and temporal cortex, where the brain regions responsible for cognitive control processes are located. In addition, these regions were less connected to other brain regions relevant for emotion processing and cognitive control.
“Our results offer the first neural explanation for deficits in emotion regulation in teenage girls,” says first author Professor Nora Raschle of the University of Zurich. “The difference in the neural activities between the two test groups could indicate fundamental differences in emotion regulation. However, it could also be due to delayed brain development in participants with conduct disorders.”
Indications for therapy
Treatment for young people diagnosed with conduct disorders may target several levels: Helping them to recognize, process and express their emotions, as well as learning emotion regulation skills. “Our findings indicate that an increased focus on emotion regulation skills may be beneficial,” says Raschle. Future studies will also look at the efficacy of specific therapy programs: “We will investigate cognitive-behavioral intervention programs that aim to enhance emotion regulation in girls with conduct disorder and see whether brain function and behavior may change accordingly,” explains last author Christina Stadler of the Child and Adolescent Psychiatric Center in Basel.
It has not yet been investigated whether male teenagers with conduct disorder show similar brain activity during emotion regulation. According to the authors, there are several indicators that the neural characteristics of conduct disorders may be gender-specific. “However, most studies – unlike ours – focus on young men, for which reason the neuro-biological understanding established up to now is mainly related to males”, says Raschle. Altered Brain Activity in Antisocial Teenagers
This study is part of the FemNAT-CD project, a European research project that aims to investigate the causes and treatment of rule-breaking and aggressive behavior in girls with conduct disorder.
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Source: University of Zurich Media Contacts: Nora Maria Raschle – University of Zurich Image Source: The image is adapted from the University of Zurich news release.
Original Research: Open access “Atypical dorsolateral prefrontal activity in females with conduct disorder during effortful emotion regulation”. NM Raschle, LV Fehlbaum, WM Menks, A Martinelli, M Prätzlich, A Bernhard, K Ackermann, C Freitag, S De Brito, G Fairchild, C Stadler. Biological Psychiatry: Cognitive Neuroscience and Neuroimaging. doi:10.1016/j.bpsc.2019.05.003
Atypical dorsolateral prefrontal activity in females with conduct disorder during effortful emotion regulation Background Conduct disorder (CD), which is characterized by severe aggressive and antisocial behavior, is linked to emotion processing and regulation deficits. However, the neural correlates of emotion regulation are yet to be investigated in adolescents with CD. Furthermore, it remains unclear whether CD is associated with deficits in emotional reactivity, emotion regulation, or both. Methods We used functional magnetic resonance imaging (fMRI) to study effortful emotion regulation by cognitive reappraisal in 59 female adolescents aged 15-18 years (30 with a CD diagnosis and 29 typically-developing (TD) controls). Results Behaviorally, in-scanner self-report ratings confirmed successful emotion regulation within each group individually, but significant group differences in emotional reactivity and reappraisal success when comparing the groups (CD
Conclusions Our results demonstrate reduced prefrontal brain activity and functional connectivity during effortful emotion regulation in females with CD. This sheds light on the neural basis of the behavioral deficits that have been reported previously. Future studies should investigate whether cognitive interventions are effective in enhancing emotion regulation abilities and/or normalizing prefrontal and temporoparietal activity in females with CD.
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