Photo of Nathaniel G. Harnett, PhD

Nathaniel G. Harnett, PhD

McLean Hospital Title
Harvard Medical School Title
  • Assistant Professor of Psychiatry


Nathaniel G. Harnett, PhD, is a neuroscientist whose research is focused on understanding the brain basis for why some people are more likely to develop stress-related disorders, such as post-traumatic stress disorder (PTSD), after trauma. His current work in the Neurobiology of Fear Laboratory, led by Kerry J. Ressler, MD, PhD, leverages magnetic resonance imaging (MRI) techniques—including functional MRI, structural MRI, and diffusion weighted imaging—to identify multimodal neural signatures of PTSD susceptibility in the acute aftermath of trauma exposure.

The overarching emphasis of Dr. Harnett’s work is on elucidating neural circuitry linked to acute and long-term development of post-traumatic syndromes and identifying robust and generalizable neurobiological targets for early intervention and treatment. Ultimately, the goal of this research is to develop predictive and preventative neuroscience-based techniques to reduce the prevalence of trauma and stress-related disorders.

Education & Training

  • 2013 BA in Psychology, Ithaca College
  • 2018 PhD in Psychology, University of Alabama at Birmingham


Phone: 617.855.3526
Office Address: Belmont campus - Oaks Building, Room 334