Lab Members
Current Members
Joshua A. Gordon, MD, PhD
- Principal Investigator
Josh is a neuroscientist and psychiatrist, and the Chair of the Department of Psychiatry at Columbia and Executive Director of the New York State Psychiatric Institute. He received his MD/PhD from UCSF. When he is not running the Department or mentoring trainees in the lab, he enjoys bicycling, spending time with his wife and two children, and walking the family dog, Zoey.
Eun Hye Park, PhD
- Associate Research Scientist
Eun Hye is a cognitive electrophysiologist whose research investigates the principles of neural signals and their organization in cognitive function and dysfunction. Her work spans model systems from mouse to human, addressing neural signal processing across multiple temporal and structural scales. She is a music lover, from Bach to beyond.
![Eun Hye Park]()
Ako Ikegami, PhD
- Postdoctoral Research Scientist
Ako studied glia-neuron interactions in microscale synaptic plasticity during her PhD, and now explores how stress and genetics converge to disrupt local and long-range prefrontal circuits in mouse models of schizophrenia. Outside the lab, she enjoys looking at, eating, and learning to catch fish.
![Ako Ikegami]()
Michelle Frazer, PhD
- Postdoctoral Research Scientist
Michelle obtained her PhD in Neuroscience from UCLA in the lab of Dr. Gina Poe, focusing on sleep-dependent memory consolidation, particularly the role of inhibitory interneurons in hippocampal circuitry during offline processing. She then joined the Gordon lab to continue investigating inhibition in neural circuits, now in the prefrontal cortical networks underlying spatial working memory. Her research aims include combining electrophysiological and optical techniques with genetic mouse models of schizophrenia to understand how cellular and circuit changes can contribute to working memory deficits.
![Michelle Frazer]()
Richa Sirmaur, PhD
- Postdoctoral Research Scientist
Richa earned her PhD from the Indian Institute of Science in Dr. Rishikesh Narayanan’s lab, where she explored how chemical synapses and gap junctions differentially shape local field potential signatures and modulate ripple oscillations using conductance-based models of CA1 hippocampal neurons. She then joined Dr. Joshua Gordon’s lab to study hippocampal-thalamocortical circuit function in mouse models of schizophrenia during spatial working memory tasks. Besides research, she enjoys exploring the city and rewatching Kung Fu Panda.
![Richa Sirmaur]()
Maddie Hsiang
- Graduate Student
Maddie graduated from Duke University, where she conducted research on statistical language acquisition under Dr. Tobias Overath. She then transitioned to a post-baccalaureate position in Dr. Patricia Jensen’s lab at the NIH, investigating the role of the locus coeruleus in feeding behaviors. Currently, Maddie is a PhD candidate in the Brown-NIH Graduate Partnership Program. Her dissertation research, which originated at the NIH and transferred with Dr. Gordon to Columbia, focuses on dissecting circuit and synaptic mechanisms supporting spatial working memory. Outside of the lab, Maddie can be found playing tennis and watching New York City subway rats.
![Maddie Hsiang]()
