Author

Zi-Long Ji

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Open access Oct 2026

The limbic navigation system as a hierarchical RNN

Path-integration-trained recurrent neural networks (RNNs) can reproduce grid-like and head-direction-like representations, but most existing models rely on low-dimensional velocity inputs and do not capture the hierarchical organisation of the brain’s self-localisation circuit. We introduce a hierarchical recurrent neu...

Zi-Long Ji, Hui-Wen Zhang, Krishna Gorantla et al. · bioRxiv · 0 citations

Open access Sep 2026

Theta sweeps accelerate cognitive map learning by broadcasting information to unvisited regions

To support flexible behavior, animals need to learn map-like representations of environments from limited experiences, but the underlying neural mechanisms remain unclear. Here, we propose that theta sweeps, a prominent feature in the activities of grid and place cells during active movement, can broadcast acquired sen...

Tian-Hao Chu, Jin-Fan He, Zi-Long Ji et al. · bioRxiv · 0 citations