n Intensity Response = Response_Max ---------------------- n n Intensity + half_sat
The example of the Michaelis-Menten function plotted here is taken from Valeton and van Norren (1983)'s paper on light adaptation in primate cones as measured extracellularly. They found that changing the steady background light level did not alter the shape of the increment-response curve. The invariant increment-response curve is plotted here as a Michaelis-Menten function with an exponent of .74 and a half-saturation constant of 3.2 log td (linearly specified as 1584.9 in the equation). They don't give the value of Rmax, so I used the value 700 which produces a range similar to that of their figure 2b.
Understanding parameter manipulations.
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