Fig. 6.

Time course of model N variables for a 2-s stimulus. Line without symbols in a shows the total amount of pheromone adsorbed. The concentration of the free pheromone F (b) shows a rapid increase and fall, whereas FA, FB, FBN, FAR, and FAR′ show much slower transients, with similar half-lives. After 5 s most of the pheromone adsorbed (79%) is bound to the scavenger form, i.e. deactivated (FB*). The simulated receptor-potential (c) obtained after FAR′–mV conversion shows the typical asymmetrical shape of the measured receptor potential, with rapid rise and slow fall