Simulations and performance of the 1D and 2D models in Task 1.

A: Schema of the task, explained in Results. B: Steady-state excerpts from three representative simulations, with different values of the environmental parameters τ, the time scale of the environment, and f, the fraction of the true stimulus S_t that is apparent in the noisy perceived stimulus S_p, and with either the 1D or the 2D model. In simulations 2 and 3, S_p is plotted sampled at 1/s, rather than 10/s as in simulation 1, to allow its structure to show through in these compressed plots. C: Performance of the 1D and 2D models, color-coded according to the scale shown on the right, over values of τ ranging from 1 to 1000 s (note the log scale) and f ranging from 1/3, where S_p is pure random noise with no information at all about S_t, to 1, where there is no noise at all and S_p is identical to S_t (see Text S1, Section 3.2). The locations of the three simulations in B are marked.