Neurobiology of Posttraumatic Stress Disorder Dysfunction and Recovery Following Cognitive Processing Therapy

Using functional magnetic resonance imaging approaches, the present research aims to examine
the relationship between traumatic experience and the neural mechanisms of various PTSD
symptoms, and determine how this relationship changes during PTSD extinction. Also, this
proposal aims to better understand how the genetic/epigenetic profile of several genes
predicts, and perhaps changes, in response to recovery from PTSD along with its neural
correlates. This understanding will help identify individuals who will respond most optimally
to a specific empirically based PTSD treatment, Cognitive Processing Therapy, while further
connecting genetic biomarkers of risk with neural intermediate phenotypes underlying PTSD
symptomatology.This study is observational as the investigator does not assign specific
interventions to the participants of the study.

Inclusion Criteria:

- PTSD diagnosis, as measured by the Clinician Administered PTSD Scale for DSM-5

- history of chronic childhood trauma due to relational abuse

- Ability to understand and sign informed consent

- Enrollment in CPT program at McLean Hospital

- Both genders, all ethnic backgrounds, age between 18 and 55

- Fluent English speakers

- Normal or Corrected Vision

Exclusion Criteria:

- History or current schizophrenia spectrum disorder or other psychotic disorders

- History or current bipolar or other related disorders

- Alcohol and/or substance use disorder within the past month

- Metal implants

- Medical or neurological illness (e.g., seizures, head injury in which they experienced
a loss of consciousness)

- Positive pregnancy test