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EURASIP Journal on Advances in Signal Processing
Figure 3 | EURASIP Journal on Advances in Signal Processing

Figure 3

From: Interactions between Uterine EMG at Different Sites Investigated Using Wavelet Analysis: Comparison of Pregnancy and Labor Contractions

Figure 3

(a)-(b) Cross wavelet coherence function: amplitude correlation between two bursts. (c)-(d) Wavelet local correlation: phase correlation between two bursts. (Left): pregnancy, (right): labor. The vertical lines indicate the start and the end of the uterine activity extracted from the Topography trace. Inside the thick black line there is significant level of 95% with resampling of Bootstraps (CWCF) and IAFFT (WLCC). The phase difference of cross spectrum is shown by arrow direction (in-phase: arrow pointing right, means Vb7 leads Vb8; antiphase: arrow pointing left, means Vb8 leads Vb7).

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