Author

Zi-Yin Liu

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Open access Sep 2026

Connectome-based biophysical modeling of a figure-ground discrimination circuit

Figure-ground discrimination (FGD) via relative motion represents a highly conserved visual computation essential for breaking camouflage. Over forty years ago, the Reichardt-Poggio-Hausen (RPH) model proposed a circuit architecture to explain this phenomenon, relying on an inhibitory wide-field pool cell to aggregate...

Zi-Yin Liu, Yi-Fei Lu, Alexander Borst et al. · bioRxiv · 0 citations

Preprint Aug 2026

Neural Quadratic Forms: A Unified Minimal Model for Sudden Learning and Scaling Laws

It is shown that a symmetry fixes what variables are: a network layer is a sum over interchangeable units, so relabeling the units leaves it unchanged; given smoothness and the condition that a unit's gradient vanish at the origin, symmetry then enforces a universal leading form for the expansion about the near-zero we...

Zi-Yin Liu, Yi-Zhou Xu, Tomaso A. Poggio et al. · 0 citations