Research Article
Windowed Multitaper Correlation Analysis of Multimodal Brain Monitoring Parameters
Figure 3
Mean windowed autocorrelation () of the ABP (dashed line) and ICP (solid line) signal for a window size of 2048 points (a). The value decreases very rapidly for both signals. For offsets greater than 500 data points the value remains stable at < 0.011 (a). Error rate with respect to : choosing the criterion for a pair of windows to be correlated as = 0.03 leads to a < 0.05 (b). Error rate amhpdneg with respect to the limit lmhpdneg for correlations to be called negative: a lmhpdneg of 130 deg for the mean Hilbert phase difference () generates an amhpdneg < 0.05 (c). Error rate amhpdpos with respect to the limit lmhpdpos for correlations to be called positive: a lmhpdpos of 50 deg for the mean Hilbert phase difference generates an amhpdneg < 0.05 (d).
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