- Graduate Field Affiliations
- Biochemistry, Molecular and Cell Biology
- Biomedical and Biological Sciences
- Biomedical Engineering
- Neurobiology and Behavior
- Genetics, Genomics, and Development
Biography
Alex Kwan received a Ph.D. in applied physics from Cornell University, where he worked on optical microscopy in the laboratory of Watt Webb. For postdoctoral studies, he was a Croucher Fellow studying neuroscience with Yang Dan at the University of California, Berkeley. He was an associate professor in the Department of Psychiatry at Yale School of Medicine, before joining the Cornell faculty in 2022.
The Kwan lab applies systems neuroscience and neuroengineering approaches to the study of mental health. We develop optical imaging techniques to visualize neural structure and activity dynamics in awake mice. We design quantitative paradigms to characterize behavior. We often complement the imaging and behavioral experiments with other molecular, electrophysiological, optical, and computational methods.
Current effort in the lab is directed towards understanding drug action in the brain. Psychiatric drugs exert powerful effects in humans characterized by altered perception, cognition, and mood. Our recent studies focus on compounds such as ketamine and serotonergic psychedelics that may be promising for treating depression. We want to know how these drugs produce therapeutic behavioral effects through modifying the connectivity and functions of neural circuits. We leverage the neurobiological insights to develop novel screening methods for preclinical drug development. Our long-term goal is to discover effective and safe strategies for treating depression.
To learn more about the lab, please visit the Kwan Lab website.
Research Interests
Select Publications
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Liao C, Dua A, Wojtasiewicz C, Liston C, and Kwan AC. Structural neural plasticity evoked by rapid-acting antidepressant interventions. Nature Reviews Neuroscience (2025).
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Aboharb F, Davoudian PA, Shao LX, Liao C, Rzepka GN, Wojtasiewicz C, Indajang J, Dibbs M, Rondeau J, Sherwood AM, Kaye AP, and Kwan AC. Classification of psychedelics and psychoactive drugs based on brain-wide imaging of cellular c-Fos expression. Nature Communications (2025).
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Shao LX, Liao C, Davoudian PA, Savalia NK, Jiang Q, Wojtasiewicz C, Tan D, Nothnagel JD, Liu RJ, Woodburn SC, Bilash OM, Kim H, Che A, and Kwan AC. Psilocybin’s lasting action requires pyramidal cell types and 5-HT2A receptors. Nature (2025)
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Shao LX, Liao C, Gregg I, Davoudian PA, Savalia NK, Delagarza K, and Kwan AC. Psilocybin induces rapid and persistent growth of dendritic spines in frontal cortex in vivo. Neuron (2021).
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Kwan AC, Olson DE, Preller KH, and Roth BL. The neural basis of psychedelic action. Nature Neuroscience (2022).
Education
- B.A.Sc., Engineering Physics, Simon Fraser University 2003
- Ph.D., Applied Physics, Cornell University 2009