Figure 1.

The kernel A(τ) used in Equation (5), given by A(τ) = a_pe^−τ/T_p − a_De^{−η τ/T_p} if τ > 0 and A(τ) = a_pe^ητ/T_D − a_De^τ/T_D if τ < 0, with a_p = [1 + ηT_p/T_D]⁻¹, a_D = [η + T_p/T_D]⁻¹, T_p = 10.2 ms, T_D = 28.6 ms, and η = 4.