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- W1974519328 abstract "We use Hamilton's equations of classical mechanics to investigate the behavior of a cortical neuron on the approach to an action potential. We use a two-component dynamic model of a single neuron, due to Wilson, with added noise inputs. We derive a Lagrangian for the system, from which we construct Hamilton's equations. The conjugate momenta are found to be linear combinations of the noise input to the system. We use this approach to consider theoretically and computationally the most likely manner in which such a modeled neuron approaches a firing event. We find that the firing of a neuron is a result of a drop in inhibition, due to a temporary increase in negative bias of the mean noise input to the inhibitory control equation. Moreover, we demonstrate through theory and simulation that, on average, the bias in the noise increases in an exponential manner on the approach to an action potential. In the Hamiltonian description, an action potential can therefore be considered a result of the exponential growth of the conjugate momenta variables pulling the system away from its equilibrium state, into a nonlinear regime." @default.
- W1974519328 created "2016-06-24" @default.
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- W1974519328 date "2008-12-04" @default.
- W1974519328 modified "2023-09-26" @default.
- W1974519328 title "Subthreshold dynamics of a single neuron from a Hamiltonian perspective" @default.
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- W1974519328 doi "https://doi.org/10.1103/physreve.78.061908" @default.
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