Figure 10. An R* activation model with τ_E rate-limiting accounts for the Empirical Response Suite I

A: With the same parameters yielding a fit to the Murnick & Lamb saturated data, the model provides a reasonable fit to the sub-saturating flash responses, as well as for the signature features of step responses (B), T_sat versus ln(I) (C). Moreover, it generates a relatively large range of LA flash sensitivity adhering to Weber's law (D); cutoff I_b = 12,100 R* s^-1. Format and symbology as in Figure 4.