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EPA-1793 – Enhancement of Right Hemisphere Eeg Functional Connectivity After Emdr Therapy

Published online by Cambridge University Press:  15 April 2020

G. Di Lorenzo ,
L. Monaco ,
A. Daverio ,
I. Giannoudas ,
A.R. Verardo ,
P. La Porta ,
C. Niolu ,
I. Fernandez ,
M. Pagani  and
A. Siracusano
G. Di Lorenzo
Affiliation:
Department of Systems Medicine University of Rome “Tor Vergata”, Chair of Psychiatry, Rome, Italy
L. Monaco
Affiliation:
Department of Systems Medicine University of Rome “Tor Vergata”, Chair of Psychiatry, Rome, Italy
A. Daverio
Affiliation:
Department of Systems Medicine University of Rome “Tor Vergata”, Chair of Psychiatry, Rome, Italy
I. Giannoudas
Affiliation:
Department of Systems Medicine University of Rome “Tor Vergata”, Chair of Psychiatry, Rome, Italy
A.R. Verardo
Affiliation:
EMDR Italy Association, EMDR Italy Association, Bovisio Masciago, Italy
P. La Porta
Affiliation:
EMDR Italy Association, EMDR Italy Association, Bovisio Masciago, Italy
C. Niolu
Affiliation:
Department of Systems Medicine University of Rome “Tor Vergata”, Chair of Psychiatry, Rome, Italy
I. Fernandez
Affiliation:
EMDR Italy Association, EMDR Italy Association, Bovisio Masciago, Italy
M. Pagani
Affiliation:
CNR, Institute of Cognitive Sciences and Technologies, Rome, Italy
A. Siracusano
Affiliation:
Department of Systems Medicine University of Rome “Tor Vergata”, Chair of Psychiatry, Rome, Italy

Abstract

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Introduction

Brain connectivity changes have been recently demonstrated in victims of psychological traumas treated with the eye movement desensitization and reprocessing (EMDR).

Objectives

Forty 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 functional source connectivity during bilateral ocular stimulation (BS) during EMDR therapy at t0 and t1.

Methods

Brain electrical activity during whole EMDR sessions was record with a 37-channel EEG. EEG functional connectivity 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 index computation, for each spectrum band, in all possible ROI pairs.

Results

Significant differences were detected between t0 and t1 in alpha band LPS indexes. A prevalent enhancement in right intrahemispheric functional connectivity was found in t1 respect to t0, particularly among ROI pairs of (a) frontal regions (anterior frontal, orbital frontal, lateral frontal cortices) and limbic structures (anterior cingulate cortex, ACC), (b) frontal regions and associative areas (insula cortex, parietal lobe), (c) ACC and primary visual cortex and (d) ACC and associative areas.

Conclusions

These findings suggest that EMDR efficacy is associated to electrical brain connectivity changes during BS. An enhancement in the right hemisphere alpha band functional connectivity of areas involved in cognitive control, emotional processing and visual associative functions may play a key role in the elaboration of psychological traumas.

Type
E05 - e-Poster Oral Session 05: Childhood and Geriatry, Depression
Information
European Psychiatry , Volume 29 , Issue S1: Abstracts of the 22nd European Congress of Psychiatry , 2014 , pp. 1
Copyright
Copyright © European Psychiatric Association 2014
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