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Eric Todd SheaBrown

6 accepted papers

2025

NetFormer: An interpretable model for recovering dynamical connectivity in neuronal population dynamics

ICLR 2025spotlight

Neuronal dynamics are highly nonlinear and nonstationary. Traditional methods for extracting the underlying network structure from neuronal activity recordings mainly concentrate on modeling static connectivity, without accounting for key nonstationary aspects of biological neural systems, such as o…

Cited by 0SourcePDFScholar
2024

How connectivity structure shapes rich and lazy learning in neural circuits

ICLR 2024poster

In theoretical neuroscience, recent work leverages deep learning tools to explore how some network attributes critically influence its learning dynamics. Notably, initial weight distributions with small (resp. large) variance may yield a rich (resp. lazy) regime, where significant (resp. minor) chan…

Cited by 19SourcePDFScholar
2023

Expressive probabilistic sampling in recurrent neural networks

NeurIPS 2023poster

In sampling-based Bayesian models of brain function, neural activities are assumed to be samples from probability distributions that the brain uses for probabilistic computation. However, a comprehensive understanding of how mechanistic models of neural dynamics can sample from arbitrary distributio…

2022

Beyond accuracy: generalization properties of bio-plausible temporal credit assignment rules

NeurIPS 2022accept

To unveil how the brain learns, ongoing work seeks biologically-plausible approximations of gradient descent algorithms for training recurrent neural networks (RNNs). Yet, beyond task accuracy, it is unclear if such learning rules converge to solutions that exhibit different levels of generalizatio…

2022

Biologically-plausible backpropagation through arbitrary timespans via local neuromodulators

NeurIPS 2022accept

The spectacular successes of recurrent neural network models where key parameters are adjusted via backpropagation-based gradient descent have inspired much thought as to how biological neuronal networks might solve the corresponding synaptic credit assignment problem [1, 2, 3]. There is so far litt…

2022

Learning dynamics of deep linear networks with multiple pathways

NeurIPS 2022accept

Not only have deep networks become standard in machine learning, they are increasingly of interest in neuroscience as models of cortical computation that capture relationships between structural and functional properties. In addition they are a useful target of theoretical research into the propert…

Cited by 6SourcePDFScholar