Novel EEG Coherence Biomarkers for PTSD Assessment

N/ACompletedNCT04209387

VA Office of Research and Development26 enrolled

Overview

Current practice for diagnosing and managing PTSD relies primarily on subjective clinical assessments by clinicians as well as patient self-report. An independent, objective and neuro-physiology based method for directly assessing brain function is not available, but is much needed to improve diagnosis and management of PTSD. To address this critical need, the investigators propose to test a set of novel biomarkers which are based on measures of coherent activity among the regions of cerebral cortex during sleep. In preliminary studies on EEG acquired during sleep from Veterans with PTSD alone as well as other co-morbidities, the investigators have shown that the neuromarkers were highly sensitive/specific to the presence of PTSD, and highly sensitive to the severity of symptoms in PTSD group. The overall goal of this project is to further validate these novel neurophysiology marker in retrospective and prospective studies

This is a prospective study with PTSD (n=50) at multiple times during the Veterans ongoing clinical treatment for PTSD. Sleep EEG measures will be collected at pretreatment, after first session of therapy, immediately after completion of therapy, and at 3-month post therapy. Methodology: N=50 Veterans with PTSD symptoms undergoing the Veterans clinical treatment at the Bedford VA will be recruited and the following data will be acquired: Sleep-EEG, Demographic, Medical History, and Use of Medications forms, The Beck Depression Inventory, Pittsburgh Sleep Quality Index, Quality of Life Enjoyment and Satisfaction Questionnaire-Short Form, NIH PROMIS, PCL-5, and Clinician-Administered PTSD Scale (CAPS-5). Primary independent variable will be changes in the Neuromarker and the dependent variables will consist of the functional and quality of life measures.

Study Type

OBSERVATIONAL

Enrollment

Conditions

PTSD

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Veterans who have been previously deployed and meet diagnostic criteria for PTSD. Prior traumatic experience(s) does not have to be direct combat (e.g. may include search and rescue of combat operations). Persons previously treated for PTSD will be eligible so long as current diagnostic criteria are present. Specific inclusion criteria are as follows: * Current (past month) diagnosis of PTSD as determined from the 30-item CAPS (score \>45). * History of deployment and combat-related exposure stated as the principal reason for seeking treatment (based on self-report). * Ability to read and speak English to complete surveys and participate in therapy. * Explicit denial of suicidal or homicidal ideation or intent, which will be corroborated by reviewing the patient chart. Exclusion Criteria: * Brain injury prohibiting speech, writing, and purposeful actions. * Identified to have current suicidal or homicidal ideation (immediate referral to a crisis center/hospital). * Major confounding psychiatric disorder; i.e. assessment indicates presence of: * Major mental health disorder that involves psychosis * Otherwise in the state of psychological crisis (appropriate referral to occur) * Current or recent (within 1 month of study entry) DSM-5 substance use disorder * Individuals who are taking either illicit or prescribed Rx that could interfere with EEG, including benzodiazepines and certain mood stabilizers (e.g., Lithium)

Outcomes

Primary Outcomes

Coherence

Coherence describes the degree of electrical activity (EEG) synchrony among brain regions. Coherence is equivalent to correlation coefficient in frequency domain and takes values from 0 (no synchrony) to 1 (perfect synchrony). A detailed description of this method is provided in: Modarres M, Cochran D, Kennedy DN, Frazier JA. Comparison of comprehensive quantitative EEG metrics between typically developing boys and girls in resting state eyes-open and eyes-closed conditions.

Time frame: Pre-treatment (within one week of initiation of PTSD therapy), within one week before initiation of their treatment protocol, within one week after the conclusion of their treatment phase, and about three months after their last therapy session