Foraging as an evidence accumulation process
Fig 3
Noisy evidence accumulation and discrete food rewards.
Shown are the average and standard deviation of the energy intake and patch residence times, simulated using intermediate values of the patch parameters: A = 5, Ttr = 5, and E* = 2 (or equivalently, ρ0 = 9.439). The filled blue curves use the density-adaptive strategy, and the filled orange curves use the robust counting strategy. The robust counting strategy simulations use α = −0.2ρ0. (A) Simulation results when the noise on the patch decision variable (σ) is increased. (B) Simulation results when the food chunk size (c) is increased. Analogous simulation results for a range of different parameter values (see Methods) are shown in S1 and S2 Figs.