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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: World Neurosurg. 2011 Nov 4;78(6):10.1016/j.wneu.2011.09.002. doi: 10.1016/j.wneu.2011.09.002

Figure 4.

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.