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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: J Neurosci Methods. 2017 Sep 22;293:151–161. doi: 10.1016/j.jneumeth.2017.09.013

Figure 1.

Figure 1

Two FC states (FCS1 and FCS2) obtained with and without PCA for (A) experimental BOLD signal, (B) stationary simulated BOLD with corrected power spectrum, (C) Non-stationary simulated BOLD with corrected power spectrum, and (D) stationary simulated BOLD with uncorrected power spectrum. For all the simulated cases, the covariance matrix and power spectrum of each subject are used to generate the simulated BOLD time-series for that particular subject. The presence or absence of FC states is not definitive in this type of visualization, particularly with the use of PCA.