Cited by 0Memory and Neural MechanismsNeural dynamics and brain functionNeuroscience and Neuropharmacology Research

Circuit mechanisms for disentangled representations and generalization in the hippocampus

Tang, Wenbo, Chang, Hongyu, Liu, Can, Perez-Hernandez, Salma, Zheng, William Y., Park, Jaehyo, Karaba, Lindsay A., Oliva, Azahara +1 more·2026·Nature Neuroscience

Abstract

Understanding how the heterogeneous activity patterns of individual neurons give rise to coherent population dynamics and cognition is a central challenge in neuroscience. In the hippocampus, neurons are tuned to spatial location, yet their activity is also modulated by multiple external and internal variables and appears to drift randomly over time, making it difficult to link hippocampal computations to behavior. By analyzing hippocampal population dynamics in behaving mice, we reveal a structured organization underlying the diversity of single-neuron responses-the hippocampus encodes different aspects of experience as disentangled variables represented in the co-activity dynamics of cell assemblies. The temporal and contextual components of these representations are governed by local inhibitory interactions and input-driven cell-assembly dynamics, respectively. Our findings reveal the circuit basis of disentangled hippocampal representations, offering a unifying geometric principle of population coding that supports flexible memory representations and enables rapid generalization of prior knowledge to new situations.

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Authors
Tang, W., Chang, H., Liu, C., Perez-Hernandez, S., Zheng, W. Y., Park, J., Karaba, L. A., Oliva, A., & Fernandez-Ruiz, A.
Affiliations
Cornell University (US)
Corresponding author
Oliva, Azahara
Venue
Nature Neuroscience
Published
2026-10-27
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W7223972333
Cited by
0
References
109
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
U.S. Department of Health & Human Services | NIH | National Institute of Mental Health (MH140009, MH136355)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
hippocampus, disentangled representations, population coding, cell assemblies, inhibitory interactions, memory generalization, spatial representation, context representation, single-unit activity, behaving mice

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