Gül Dölen
Neuroscientist, Johns Hopkins University
Johns Hopkins neuroscientist whose discovery that psychedelics reopen 'critical periods' of social learning in the brain has become one of the most influential mechanistic theories in contemporary psychedelic science.
Biography
Gül Dölen is an associate professor of neuroscience at Johns Hopkins University School of Medicine and the principal investigator of the Dölen Lab, which studies the neurobiology of social behavior and learning. Her work has produced one of the most conceptually important frameworks in current psychedelic science: the critical period hypothesis of psychedelic action.
Critical periods are windows of heightened neuroplasticity in early development during which the brain is especially open to learning from social experience. Dölen's 2023 Nature paper — using MDMA in an octopus model and extending the findings to mice with multiple psychedelics including psilocybin, ketamine, ibogaine, and LSD — demonstrated that psychedelics appear to reopen these critical periods in the adult brain, temporarily restoring a state of heightened social learning that normally closes after adolescence. The implications for therapy are significant: psychedelic-assisted therapy may work in part because it recreates a window of developmental-level openness to new relational patterns, memories, and behavioral change.
Dölen's research takes a broad comparative approach, including her octopus sociality studies (octopuses, which are normally asocial, became socially exploratory under MDMA), which has attracted both scientific and popular attention. She is known for thinking ambitiously across species and scales, connecting molecular neuroscience with social and behavioral outcomes in ways that illuminate the evolutionary roots of psychedelic effects.
Organizations
Why They Matter to the LearnShrooms Community
Dölen's critical period hypothesis gives psychedelic-assisted therapy a developmental neuroscience framework that explains why these compounds might achieve what years of conventional therapy cannot — and offers a mechanistic bridge between the pharmacology and the therapy.
Legal Context
For the legal landscape where Gül Dölen operates, see psilocybin laws in Maryland.