Two computational regimes of a single-compartment neuron separated by a planar boundary in conductance space

Details Two computational regimes of a single-compartment neuron separated by a planar boundary in conductance space Two computational regimes of a single-compartment neuron separated by a planar boundary in conductance space

2007-05-29

arxiv.org/abs/0705.4316v2

Biology

Quantitative Biology

Neurons and Cognition

18 pages, 5 figures, accepted version

Scientific paper

Recent in vitro data show that neurons respond to input variance with varying sensitivities. Here, we demonstrate that Hodgkin-Huxley (HH) neurons can operate in two computational regimes, one that is more sensitive to input variance (differentiating) and one that is less sensitive (integrating). A boundary plane in the 3D conductance space separates these two regimes. For a reduced HH model, this plane can be derived analytically from the V nullcline, thus suggesting a means of relating biophysical parameters to neural computation by analyzing the neuron's dynamical system.

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