naka_rushton: Modified Naka-Rushton function

In sean-rohan-NOAA/GVRDM: Generalized visual reaction distance model

Description

Contrast function (Naka-Rushton) with the flexibility to fit additional shapes, as described in Peirce (2007). Either of the function arguments nn or ss can be considered the equivalent of the alpha parameter.

Usage

naka_rushton(Rmax = 1, Eb, Ke, nn = 1, ss = 1, BB = 0)

Arguments

Rmax	Maximum retinal response (default = 1)
Eb	Incident light
Ke	Half-saturation parameter
nn	Shape parameter (Peirce 2007)
ss	Shape parameter
BB	Baseline signal without any incident light.

Value

Returns a vector of values of the Naka-Rushton function.

References

Peirce, J.W., 2007. The potential importance of saturating and supersaturating contrast response functions in visual cortex. J. Vis. 7, 1–10. https://doi.org/10.1167/7.6.13

sean-rohan-NOAA/GVRDM documentation built on Dec. 22, 2021, 11:14 p.m.