Figure 2

The Effects of Varying Input Phase. A): shows the model configuration where X has a causal influence upon Y and there is no feedback. Both X an Y have an external, environmental oscillatory input. B): shows approximately 1 sec of simulated time domain plots the blue trace is X _t , the green trace is Y _t . In B₁ ϕ _x = ϕ _y and in B₂ δϕ = ϕ _x - ϕ _y = π, in both B₁ and B₂ the X trace is identical, yet the trace of Y is shown to be greatly changed simply by altering the phase difference. The difference in the magnitude is denoted by Δ. As the inherent noise will mask the effect of the phase differences, C) shows the effect on Δ by varying both input noise and δϕ. D₁ shows how this Δ changes by varying δϕ in the absence of noise. D₂ shows how the effect of noise in the system lessens the effect of the phase differences.