Channel current fluctuations conclusively explain neuronal encoding of internal potential into spike trains
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Updated: Nov 12, 2025

Slice Patch Clamp Technique for Analyzing Learning-Induced Plasticity
Published on: November 11, 2017
Martin N P Nilsson1, Henrik Jörntell2
1RISE Research Institutes of Sweden, POB 1263, SE-164 29 Kista, Sweden.
Abstract:
Hodgkin and Huxley's seminal neuron model describes the propagation of voltage spikes in axons, but it cannot explain certain full-neuron features crucial for understanding the neural code. We consider channel current fluctuations in a trisection of the Hodgkin-Huxley model, allowing an analytic-mechanistic explanation of these features and yielding consistently excellent matches with in vivo recordings of cerebellar Purkinje neurons, which we use as model systems. This shows that the neuronal encoding is described conclusively by a soft-thresholding function having just three parameters.
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