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. 2012 Sep 18;7(9):e44633. doi: 10.1371/journal.pone.0044633

Figure 11. Impact of different types of de-correlations and baselines on a) the connectivity pattern Post Negative and b) the contrast Post Negative - Pre Negative - (Post Neutral - Pre Neutral).

Figure 11

Four types of de-correlation were implemented: None without any de-correlation, Exponential with Inline graphic, Gaussian with Inline graphic and Power law with Inline graphic. Data from the interval Inline graphic–0 ms provides a baseline for the FDR threshold in Pre-Stimulus. As an alternative approach Surrogate data was estimated by destroying correlation in phases. Significant higher connectivities are marked by white dots.