Interspike interval correlations in neuron models with adaptation and correlated noise
Fig 9
Range of validity and effect of varying noise strengths.
Coefficient of variation CV (top) and SCC of adjacent intervals ρ1 (bottom) for the GIF model with weak adaptation. We test to which extent simulation results are well described by our weak-noise theory with respect to the two small parameters (D, σ2). In A the variance of the colored noise is fixed (σ2 = 0.1) and the white noise intensity D is varied; in B we fix D = 0.01 and vary σ2. We find quantitative agreement for CV < 0.3 in A and CV < 0.15 in B. In both cases qualitative agreement in terms of the shape of the SCCs (see insets) is found over the whole range of D and σ2, respectively. Parameters: γ = 1, μ = 20, βw = 1.5, τw = 1.5, τa = 10, Δ = 10, τη = 1 and resulting T* = 0.57.