Cited by 25Psychosomatic Disorders and Their TreatmentsAdvanced Neuroimaging Techniques and ApplicationsEpilepsy research and treatment

Microstructural integrity of affective neurocircuitry in patients with dissociative seizures is associated with emotional task performance, illness severity and trauma history

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Jungilligens, Johannes, Wellmer, Jörg, Kowoll, Annika, Schlegel, Uwe, Axmacher, Nikolai, Popkirov, Stoyan·2021·Seizure

Abstract

PURPOSE: To identify variations in white matter tract integrity related to behavioural control in response to emotional stimuli in patients with dissociative seizures (DS) and healthy controls (HC), and examine associations with illness characteristics and psychological trauma history. METHODS: Twenty DS patients and 20 HC completed an emotional go/no-go task and questionnaires, and then underwent diffusion tensor imaging (DTI). RESULTS: Patients had higher false alarm rates in response to negative emotional stimuli than HC. Task performance was correlated with self-reported difficulties in emotional awareness and regulation in everyday life. White matter analysis using tract-based spatial statistics revealed no between-group differences. In patients, fractional anisotropy (FA) in the right uncinate fasciculus, right and left fornix/stria terminalis, and corpus callosum were correlated with task performance. Similar results were found for radial diffusivity (RD), but not mean (MD) or axial diffusivity (AD). In HC, task performance was associated with AD and RD of fewer and smaller clusters in the corpus callosum and right fornix/stria terminalis, and none for FA or MD. Probabilistic tractography of thus identified tracts revealed that mean FA values were correlated with illness parameters (right fornix/stria terminalis with age at onset; posterior corpus callosum with seizure frequency), and psychological trauma history (traumatic experiences during adolescence with anterior corpus callosum). CONCLUSIONS: Patients with DS show impaired behavioural control in response to emotional stimuli. Microstructural variations in task-related neurocircuitry show associations with illness parameters and psychological trauma history. Future studies using psychiatric controls should examine the specificity of these findings.

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Crossref · 10.1016/j.seizure.2020.11.021

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Authors
Jungilligens, J., Wellmer, J., Kowoll, A., Schlegel, U., Axmacher, N., & Popkirov, S.
Affiliations
  • University Hospitals of the Ruhr-University of Bochum (DE)
  • Universitätsklinikum Knappschaftskrankenhaus Bochum (DE)
  • Ruhr University Bochum (DE)
Corresponding author
Jungilligens, Johannes
Venue
Seizure
Publisher
Elsevier BV
Published
2021-01
Volume
84
Pages
91-98
ISSN
1059-1311 (ISSN-L)
OpenAlex
W3107814014
Cited by
25
References
61
Citations by year
2026: 1 · 2025: 5 · 2024: 7 · 2023: 4 · 2022: 6 · 2021: 2
FWCI
2.19
Type
journal article
Language
en
Open access
Locations
  • Seizure (publishedVersion, other-oa)
  • PubMed (publishedVersion)
Funders
Wissenschaftskolleg zu Berlin
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Psychosomatic Disorders and Their Treatments
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
Keywords
psychogenic non-epileptic seizures, white matter microstructure, emotional go/no-go task, uncinate fasciculus, fornix, stria terminalis, corpus callosum, fractional anisotropy, radial diffusivity, age of onset, seizure frequency
MeSH terms
Adolescent, Brain, Corpus Callosum, Humans, Seizures, Task Performance and Analysis, Diffusion Tensor Imaging, White Matter

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