Figure 4.
Sine-cosine. Time-delayed mutual information (MI) showed positive peaks at π/2 ± πn, and cross-correlation showed positive peaks at -π/2 ± 2πn and troughs at π/2 ± 2πn. Sine and cosine (bottom left, bottom right) scaled by factor of 10 and increased by absolute value of 10 to avoid negative numbers in calculation.