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Delayed fall of FAR′ and the receptor potential, due to overloading of the deactivation mechanism at stimuli above Usat. Time course of simulated receptor-potentials with stimulus durations of 20, 200, and 2,000 ms. The time course of FAR′ is shown for 2,000 ms stimuli only. Model N (a) and model R (b) show similar delays. The delay produced by model S (c) is much smaller indicating a higher capacity of deactivation
