Effects of EMDR on Psychological Symptoms and EEG Findings in Trauma-Exposed Individuals

NCT ID: NCT07206381

Last Updated: 2026-01-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2026-03-04

Study Completion Date

2026-08-15

Brief Summary

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This study will examine the effects of Eye Movement Desensitization and Reprocessing (EMDR) group therapy on adults who experienced the April 2025 Silivri earthquake in Turkey. Participants will be randomly assigned to either an EMDR intervention group or a waitlist control group. Psychological symptoms will be measured using the PTSD Checklist for DSM-5 (PCL-5), the Depression, Anxiety, and Stress Scale (DASS-21), the Short Form Health Survey (SF-36), and the Pittsburgh Sleep Quality Index (PSQI). Quantitative EEG (QEEG) recordings will also be collected before and after the intervention to assess changes in brain activity related to emotional regulation and trauma processing. The goal of the study is to evaluate whether EMDR produces both clinical and neurophysiological improvements in trauma-exposed individuals.

Detailed Description

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Traumatic experiences often lead to persistent psychological symptoms such as posttraumatic stress, depression, anxiety, and sleep disturbances, which significantly impair quality of life. Eye Movement Desensitization and Reprocessing (EMDR) is an evidence-based intervention for trauma-related disorders, and growing evidence suggests that it may also produce measurable changes in brain activity. This randomized controlled trial will evaluate the effects of EMDR group therapy on both clinical outcomes and neurophysiological markers in adults exposed to the April 2025 Silivri earthquake in Turkey.

Forty participants meeting inclusion criteria will be randomly assigned to either an EMDR intervention group (20 participants) or a waitlist control group (20 participants). The intervention group will receive 5-7 sessions of standardized EMDR group therapy, delivered face-to-face by trained therapists. Quantitative EEG (QEEG) recordings will be collected at baseline and after the intervention to assess changes in spectral power, frontal alpha asymmetry, and coherence patterns. Clinical outcomes will be measured with validated self-report instruments assessing PTSD symptoms, depression, anxiety, stress, sleep quality, and overall health-related quality of life.

This study is designed to test the hypothesis that EMDR group therapy produces significant improvements in both psychological symptoms and EEG biomarkers compared to a waitlist control. By integrating subjective self-report and objective neurophysiological data, the trial aims to provide a comprehensive evaluation of EMDR's therapeutic effects in trauma-exposed populations.

Conditions

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PTSD - Post Traumatic Stress Disorder Depression Anxiety Disorders and Symptoms Sleep Quality Quality of Life

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Participants will be randomly assigned in parallel to either an EMDR intervention group or a waitlist control group. The EMDR group will receive 5-7 sessions of standardized group therapy, while the control group will not receive any intervention during the study period but will be offered EMDR after study completion
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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EMDR Group

Participants will receive 5-7 sessions of Eye Movement Desensitization and Reprocessing (EMDR) group therapy, delivered face-to-face by trained therapists, in line with the standard EMDR protocol. EEG measurements and psychological scales will be administered before and after the intervention.

Group Type EXPERIMENTAL

Eye Movement Desensitization and Reprocessing (EMDR) Group Therapy

Intervention Type BEHAVIORAL

Sessions conducted in groups with one therapist and one co-therapist; each session follows the EMDR standard protocol.

Waitlist Control

Participants in this arm will not receive any active psychotherapy intervention during the study period. They will undergo baseline and post-test EEG recordings and psychological assessments at the same time intervals as the experimental group. For ethical reasons, they will be offered EMDR therapy after the study is completed if requested.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Eye Movement Desensitization and Reprocessing (EMDR) Group Therapy

Sessions conducted in groups with one therapist and one co-therapist; each session follows the EMDR standard protocol.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Meeting DSM-5 criteria for posttraumatic stress symptoms following the April 2025 Silivri earthquake
* Age between 18 and 50 years
* Either medication-free for at least 1 month or on a stable dose of psychotropic medication
* No medical contraindications for EEG recording (e.g., no epilepsy, no metal implants)

Exclusion Criteria

* Current diagnosis of schizophrenia, bipolar disorder, or a neurological disorder
* Receiving psychotherapy
* Inability to attend sessions regularly due to logistical or cognitive limitations
Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Istanbul Galata University

OTHER

Sponsor Role lead

Responsible Party

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Çiğdem Kınık

Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Central Contacts

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Çiğdem Kınık, PhD

Role: CONTACT

+905308777181

Önder Kavakçı, MD. Prof Dr

Role: CONTACT

+90 530 419 91 92

References

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Colvonen PJ, Glassman LH, Crocker LD, Buttner MM, Orff H, Schiehser DM, Norman SB, Afari N. Pretreatment biomarkers predicting PTSD psychotherapy outcomes: A systematic review. Neurosci Biobehav Rev. 2017 Apr;75:140-156. doi: 10.1016/j.neubiorev.2017.01.027. Epub 2017 Jan 28.

Reference Type BACKGROUND
PMID: 28143760 (View on PubMed)

van der Kolk BA, Spinazzola J, Blaustein ME, Hopper JW, Hopper EK, Korn DL, Simpson WB. A randomized clinical trial of eye movement desensitization and reprocessing (EMDR), fluoxetine, and pill placebo in the treatment of posttraumatic stress disorder: treatment effects and long-term maintenance. J Clin Psychiatry. 2007 Jan;68(1):37-46. doi: 10.4088/jcp.v68n0105.

Reference Type BACKGROUND
PMID: 17284128 (View on PubMed)

Jokic-Begic N, Begic D. Quantitative electroencephalogram (qEEG) in combat veterans with post-traumatic stress disorder (PTSD). Nord J Psychiatry. 2003;57(5):351-5. doi: 10.1080/08039480310002688.

Reference Type BACKGROUND
PMID: 14522608 (View on PubMed)

Butt M, Espinal E, Aupperle RL, Nikulina V, Stewart JL. The Electrical Aftermath: Brain Signals of Posttraumatic Stress Disorder Filtered Through a Clinical Lens. Front Psychiatry. 2019 May 31;10:368. doi: 10.3389/fpsyt.2019.00368. eCollection 2019.

Reference Type BACKGROUND
PMID: 31214058 (View on PubMed)

Pagani M, Di Lorenzo G, Verardo AR, Nicolais G, Monaco L, Lauretti G, Russo R, Niolu C, Ammaniti M, Fernandez I, Siracusano A. Neurobiological correlates of EMDR monitoring - an EEG study. PLoS One. 2012;7(9):e45753. doi: 10.1371/journal.pone.0045753. Epub 2012 Sep 26.

Reference Type BACKGROUND
PMID: 23049852 (View on PubMed)

Pagani M, Di Lorenzo G, Monaco L, Daverio A, Giannoudas I, La Porta P, Verardo AR, Niolu C, Fernandez I, Siracusano A. Neurobiological response to EMDR therapy in clients with different psychological traumas. Front Psychol. 2015 Oct 27;6:1614. doi: 10.3389/fpsyg.2015.01614. eCollection 2015.

Reference Type BACKGROUND
PMID: 26579006 (View on PubMed)

Related Links

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https://orcid.org/0009-0000-5236-2968

ORCID profile of Principal Investigator

Other Identifiers

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EMDR-EEG-TR-2025

Identifier Type: -

Identifier Source: org_study_id

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