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. Author manuscript; available in PMC: 2015 Jan 15.
Published in final edited form as: Neuroimage. 2013 Feb 9;85(0 1):10.1016/j.neuroimage.2013.01.073. doi: 10.1016/j.neuroimage.2013.01.073

Figure 3.

Figure 3

Construction of synthetic data. Thirty individual evoked responses were added over all 60 LS baseline measurements (5 subjects × 3 runs × 4 LS channels) at random onset times with an inter-stimulus interval taken randomly from a uniform distribution (12-30 sec). We also added an evoked systemic artifact to the HbO signals (LS and SS) that was phase-locked with the stimulus onset. The green box emphasizes a portion of the baseline signal where the Source SS signal resembles the LS signal while the yellow box emphasizes a portion where the Detector SS signal resembles the LS signal.