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Eeg coherence in depressive female adolescents with different types of auto-aggressive behavior

Published online by Cambridge University Press:  13 August 2021

A. Iznak ,
E. Iznak ,
E. Damyanovich  and
I. Oleichik
A. Iznak*
Affiliation:
Laboratory Of Neurophysiology, Mental Health Research Centre, Moscow, Russian Federation
E. Iznak
Affiliation:
Laboratory Of Neurophysiology, Mental Health Research Centre, Moscow, Russian Federation
E. Damyanovich
Affiliation:
Laboratory Of Neurophysiology, Mental Health Research Centre, Moscow, Russian Federation
I. Oleichik
Affiliation:
Clinical Department Of Endogenous Mental Disorders And Affective States, Mental Health Research Centre, Moscow, Russian Federation
*
*Corresponding author.

Abstract

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Introduction

Intracortical interactions reflected in EEG coherence (Coh) play an important role in the control of behavior in both norm and mental disorders. EEG Coh in depression is less than in the norm. Non-suicidal self-injuries (NSSI) are widespread in adolescents and represent a significant risk factor for consequent suicidal attempts (SA).

Objectives

The aim of the study was to identify the differences in EEG coherence between depressive female adolescents who have NSSI or NSSI and SA in their history compared with healthy controls.

Methods

75 depressive female adolescents (16–25 years old) were enrolled in the study and divided into two subgroups: NSSI (n=38) and NSSI+SA (n=37). The control group included 20 healthy subjects (HC) matched by age and gender. Baseline EEG was recorded, and EEG coherence was analyzed in 8 narrow frequency sub-bands.

Results

In the NSSI subgroup, the number of “high coherent connections” (pairs of EEG leads with Coh>0.80) was the lowest in comparison with the NSSI+SA subgroup (intermediate values) and HC (the highest values) in theta-1 (4-6 Hz), theta-2 (6-8 Hz), alpha-1 (8-9 Hz) and alpha-2 (9-11 Hz) EEG frequency sub-bands, especially in frontal-central-parietal regions.

Conclusions

The lowest EEG coherence in the NSSI subgroup suggests that this subgroup is “more depressive” than the NSSI+SA subgroup, while the NSSI+SA subgroup is “more normal” but has increased suicidal risk. The results obtained suggested the use of EEG Coh data to clarify the degree of suicidal risk in depressive adolescents with different types of auto-aggressive behavior. The study supported by RBRF grant No.20-013-00129а.

Disclosure

No significant relationships.

Keywords

EEG coherenceDepressionauto-aggressive behaviorfemale adolescents
Type
Abstract
Information
European Psychiatry , Volume 64 , Special Issue S1: Abstracts of the 29th European Congress of Psychiatry , April 2021 , pp. S829
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of the European Psychiatric Association
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