Figure 2.

Probability density functions: (a) von Mises distribution with mean μ = 0 for a range of concentration values, κ; (b) relative phase distribution for bivariate circularly symmetric Gaussian models for different values of cross-correlation magnitude $\left|R_{12}\right|=\frac{{\kappa }_{12}}{\sqrt{{\kappa }_{11}{\kappa }_{22}}}$ with phase μ₁₂ = 0.