Phase Resetting, Measurement of Infinitessimal

The infinitesimal phase response curve (iPRC) is a measure of an oscillator, which specifies how the phase of that oscillator shifts, as a function of the phase of a perturbation as the width and height of the pulse go to zero, approximating a continuous time delta function (see “▶Weak Coupling Theory”). In neurons, the iPRC measures the spike time shift in response to the injection of a small current (or less often a conductance) pulse at a given time. The iPRC should scale linearly with pulse area.

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