Polysemanticity in human hippocampal neurons
Xinyuan Yan, Li Ji-An, Melissa C. Franch, Hanlin Zhu, Rhiannon L Cowan, James L. Belanger, Ana G. L Chavez, Assia Chericoni, Taha Ismail, Kalman A. Katlowitz, Luca D. Kolibius, Elizabeth A. Mickiewicz, D Ferreira Paulo, Eleonora Bartoli, Jay A. Hennig, , Sameer Anil Sheth
This study shows that human hippocampal neurons use polysemantic coding, where neurons represent multiple unrelated semantic features through high-dimensional superposition, enabling efficient contextualization of meaning.
bioRxiv · May 4, 2026 · PreprintNeuroscience