Postdoctoral Fellows

Nakul Aggarwal PhD

Position title: Honorary fellow


Nakul is a graduate student in the Medical Scientist Training Program (MD-PhD). He recently completed the PhD portion of his training, and remains an honorary fellow in the Kalin lab as he returns to clinical training. His primary research interests involve the use of advanced imaging techniques to delineate neural alternations underlying the development of early childhood anxiety. More specifically, his thesis work focuses on cross-species longitudinal analyses of diffusion tensor and functional magnetic resonance imaging data from non-human primate and preadolescent human samples, with the end goal of identifying evolutionarily conserved neural patterns in the prefrontal-limbic circuit that may be predispose one to developing clinical anxiety. He ultimately hopes to combine his clinical and translational research training to pursue an academic career as a child psychiatrist and mental health researcher.

Rachel Puralewski PhD

Position title: Postdoctoral Fellow


Rachel is a postdoctoral fellow with the Kalin Lab who completed her PhD with the lab in November 2023. She is interested in the neural circuitry and molecular mechanisms that are relevant to the development of anxious temperament. She is currently investigating how differences in anxiety-related behaviors during the early-life of non-human primates relate to changes in the functional connectivity of the amygdala and prefrontal cortices. She is also studing how differing behavioral and connectivity growth trajectories may be reflected in the molecular signatures of anxiety-related brain regions.