Title:The Role of Neurophysiological Biomarkers in Obsessive-Compulsive Disorder
Volume: 29
Issue: 35
Author(s): Samuel A Herzog and Vlasios Brakoulias*
Affiliation:
- Department of Psychiatry, Sydney Medical School (Nepean), The University of Sydney, Nepean Hospital,
Sydney, Australia
- Western Sydney Local Health District Mental Health Service, Sydney, Australia
- School of Medicine and Translational Health Research Institute (THRI), Western Sydney University,
Sydney, Australia
Keywords:
Obsessive-compulsive disorder, biomarkers, heart rate variability, electroencephalography, physiology, prognosis.
Abstract: Background: Obsessive-compulsive disorder is a highly debilitating psychiatric
disorder with a high rate of treatment resistance. Biomarkers for obsessive-compulsive
disorder may assist clinicians by predicting response to treatments and prognosis.
Objective: The aim of the study was to review the literature with regards to two of the
more easily ascertainable and relatively inexpensive physiological biomarkers, i.e., heart
rate variability and electroencephalography.
Methods: A narrative review of the literature was conducted.
Results: Decreased heart rate variability has been associated with increased symptom
severity of obsessive-compulsive disorder. Findings from electroencephalography have
also predicted response to pharmacotherapy and it is likely that biomarkers for OCD will
have their greatest utility in predicting response to different pharmacological agents.
However, the number of studies is small and results are inconsistent.
Conclusion: More research is required to determine whether heart rate variability and
electrophysiological studies play a clinical role as biomarkers for obsessive-compulsive
disorder.