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Emdr Therapy Changes the Resting-state Eeg

Published online by Cambridge University Press:  15 April 2020

G. Di Lorenzo ,
L. Monaco ,
A. Daverio ,
E. Santarnecchi ,
A.R. Verrdo ,
C. Niolu ,
I. Fernandez ,
M. Pagani  and
A. Siracusano
G. Di Lorenzo
Affiliation:
Department of Systems Medicine, University of Rome ”Tor Vergata“, Rome, Italy
L. Monaco
Affiliation:
Department of Systems Medicine, University of Rome ”Tor Vergata“, Rome, Italy
A. Daverio
Affiliation:
Department of Systems Medicine, University of Rome ”Tor Vergata“, Rome, Italy
E. Santarnecchi
Affiliation:
Department of Medicine Surgery and Neuroscience, University of Siena, Siena, Italy
A.R. Verrdo
Affiliation:
EMDR Italy Association, Bovisio Masciago, MB, Italy
C. Niolu
Affiliation:
Department of Systems Medicine, University of Rome ”Tor Vergata“, Rome, Italy
I. Fernandez
Affiliation:
EMDR Italy Association, Bovisio Masciago, MB, Italy
M. Pagani
Affiliation:
Institute of Cognitive Sciences and Technologies, CNR, Rome, Italy
A. Siracusano
Affiliation:
Department of Systems Medicine, University of Rome ”Tor Vergata“, Rome, Italy

Abstract

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Introduction

During the Eye Movement Desensitization and Reprocessing (EMDR) changes of brain electrical activity was recently demonstrated in victims of psychological traumas.

Objectives

Thirty-one victims of psychological traumas were investigated at the first EMDR session (t0) and at the last one performed after processing the index trauma (t1).

Aims

To investigate differences in EEG source activity and EEG source functional connectivity (EEG-SFC) in eyes closed condition before the beginning of t0 and t1 EMDR therapy session.

Methods

Electrical source activity was computed by eLORETA from a 37-channel EEG. EEG-SFC analysis was based on the lagged phase synchronization (LPS), derived by a two-step eLORETA procedure: dimensionality reduction of inverse matrix from 6239 voxels to 28 regions of interest (ROIs); LPS indices computation, for each spectrum band, in all possible ROI pairs.

Results

Resting-state EEG source activity resulted in a low frequency increase of posterior cingulate cortex and a high frequency (beta2 and gamma) decrease in right prefrontal and parietal cortex between t0 and t1. Significant enhancements of EEG-SFC were detected in t1 respect to t0 between ROI pairs of theta band right temporo-parahippocampal regions and alpha band fronto-parietal regions.

Conclusions

Significant modifications of resting-state electrical brain activity were present after EMDR therapy. These findings suggest that the elaboration of psychological traumas induced by EMDR produces, in a resting-state condition, an enhancement of activity and functional connectivity of cerebral sources involved in cognitive control and emotional processing.

Type
Article: 0677
Information
European Psychiatry , Volume 30 , Issue S1: Abstracts of the 23rd European Congress of Psychiatry , March 2015 , pp. 1
Copyright
Copyright © European Psychiatric Association 2015
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