(A) The normalized MMSE of a dense population of Gaussian tuning functions against tuning function width, for different values of effective decoding time (shortest – uppermost triplet, longest – lowermost triplet). In each triplet three values of prior standard deviation were examined –σx = 1 (solid), σx = 2 (dashed), and σx = 3 (dotted), where the optimal width is indicated by squares, circles and diamonds, respectively. (B) The normalized MMSE for different values of effective decoding time (σx = 1), obtained theoretically (dashed lines, optimal width indicated by circles) and in simulation (solid lines, optimal width indicated by squares). Simulation parameters: N = 251, X ∈ [−4,4], M = 250, Δc = 0.034, λmax = 50.