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Neurophysiological features associated with suicidal risk in dementias

Published online by Cambridge University Press:  13 August 2021

I. Mudrenko  and
A. Yurchenko
I. Mudrenko
Affiliation:
Department Of Neurosurgery And Neurology, Sumy State University, Sumy, Ukraine
A. Yurchenko*
Affiliation:
Department Of Neurosurgery And Neurology, Sumy State University, Sumy, Ukraine
*
*Corresponding author.

Abstract

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Introduction

The bioelectrical activity of the brain of suicidals has specific features.

Objectives

Investigate neurophysiological features associated with high suicidal risk (SR) in dementias.

Methods

An electroencephalographic study of brain was performed in 66 patients with dementia, of which 33 (with high SR) were included in the main group, the other 33 (with low SR) – in the control group.

Results

SR correlates include an increase in the spectral density and amplitude (in μV) of the α-rhythm in the right central (C4) (109.4) – in the main group, compared with (64.5) – in the control; in the temporal areas (T4) (132.2) - in the main group, (70.0) – in the control group (p<0.001). The predominance of the spectral density of the slow θ-rhythm over the entire surface of the brain (p<0.001) and δ-rhythm in the projection of Fp2 (82.3) – in the main and (116.1) – in the control groups (p<0.001), F3 (54.80) and (68.1), respectively, (p<0.05), F4 (52.4) and (67.3), respectively, (p<0.01), C4 (52.0) and (62.0), respectively (p<0.05), P3 (44.4) and (58.9), respectively, (p<0.01), O1 (67.6) and (89.41), (p<0.001), O2 (68.5) and (85.8), respectively (p<0.001) are a predictor of low SR in dementias.

Conclusions

With the progression of changes in the brain in dementias SR decreases. In the initial phases of the dementing process with a relatively preserved functional capacity of the brain SR is high.

Disclosure

No significant relationships.

Keywords

electroencephalographic correlatessuicidal riskdementias.
Type
Abstract
Information
European Psychiatry , Volume 64 , Special Issue S1: Abstracts of the 29th European Congress of Psychiatry , April 2021 , pp. S830
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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