Compute the Emax or its inverse.

Compute the Emax or its inverse.

Usage

emax_fun(x, e0, emax, ex50, hill = 1)

inverse_emax(effect, e0, emax, ex50, hill = 1)

Arguments

x

The input paramter (often a concentration)

e0

Baseline effect

emax

Maximum effect (at the limit as x approaches Inf)

ex50

Amount of x yielding 50% of the maximum effect

hill

The hill slope (also known as the sigmoidicity)

effect

The effect

Value

effect for emax_fun or x for inverse_emax

Details

The equation for the Emax function is

$$effect = e0 + emax * x^{hill}/(ex50^{hill} + x^{hill})$$

Functions

• inverse_emax(): Inverse emax