Online synaptic credit assignment in active dendrites
Credit assignment in neural networks is usually formulated as the computation of an abstract error gradient. Whether such a gradient can take a physical, causal form in biophysically detailed multi-compartment neuron models, and enable online, supervised learning, remains unclear. Here we show that the gradient of a detailed neuron's voltage with respect to a synaptic weight is itself a voltage.…
We haven't written up this one. bioRxiv has the full story — the link below goes straight to it.
