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Ulrike Hahn boosted
Fabrizio Musacchio
@pixeltracker@sigmoid.social  路  activity timestamp 2 days ago

馃 New paper by Deistler et al: #JAXLEY: differentiable #simulation for large-scale training of detailed #biophysical #models of #NeuralDynamics.

They present a #differentiable #GPU accelerated #simulator that trains #morphologically detailed biophysical #neuron models with #GradientDescent. JAXLEY fits intracellular #voltage and #calcium data, scales to 1000s of compartments, trains biophys. #RNNs on #WorkingMemory tasks & even solves #MNIST.

馃實 https://doi.org/10.1038/s41592-025-02895-w

#Neuroscience #CompNeuro

Jaxley: differentiable simulation enables large-scale training of detailed biophysical models of neural dynamics

Fig. 1: Differentiable simulation enables training biophysical neuron models.
Fig. 1: Differentiable simulation enables training biophysical neuron models.
Fig. 1: Differentiable simulation enables training biophysical neuron models.
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Fabrizio Musacchio
@pixeltracker@sigmoid.social  路  activity timestamp 2 days ago

馃 New paper by Deistler et al: #JAXLEY: differentiable #simulation for large-scale training of detailed #biophysical #models of #NeuralDynamics.

They present a #differentiable #GPU accelerated #simulator that trains #morphologically detailed biophysical #neuron models with #GradientDescent. JAXLEY fits intracellular #voltage and #calcium data, scales to 1000s of compartments, trains biophys. #RNNs on #WorkingMemory tasks & even solves #MNIST.

馃實 https://doi.org/10.1038/s41592-025-02895-w

#Neuroscience #CompNeuro

Jaxley: differentiable simulation enables large-scale training of detailed biophysical models of neural dynamics

Fig. 1: Differentiable simulation enables training biophysical neuron models.
Fig. 1: Differentiable simulation enables training biophysical neuron models.
Fig. 1: Differentiable simulation enables training biophysical neuron models.
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Fabrizio Musacchio
@pixeltracker@sigmoid.social  路  activity timestamp 5 days ago

馃 New preprint by Codol et al. (2025): Brain-like #NeuralDynamics for #behavioral control develop through #ReinforcementLearning. They show that only #RL, not #SupervisedLearning, yields neural activity geometries & dynamics matching monkey #MotorCortex recordings. RL-trained #RNNs operate at the edge of #chaos, reproduce adaptive reorganization under #visuomotor rotation, and require realistic limb #biomechanics to achieve brain-like control.

馃實 https://doi.org/10.1101/2024.10.04.616712

#CompNeuro #Neuroscience

Brain-like neural dynamics for behavioral control develop through reinforcement learning

Fig. 2: Neural networks trained with RL or SL achieved high performance in controlling the effector .
Fig. 2: Neural networks trained with RL or SL achieved high performance in controlling the effector .
Fig. 2: Neural networks trained with RL or SL achieved high performance in controlling the effector .
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