Component-removing blind source separation can collapse causal graph recovery to zero in synthetic calcium traces and dramatically densify connectivity estimates from real v2a-RSN traces, so BSS denoising is not a neutral preprocessing step.
Functional and effective connectivity: a review.Brain Connectivity2011,1, 13–36
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Blind Source Separation Can Distort Behavior and Connectivity Analyses of Calcium Transients
Component-removing blind source separation can collapse causal graph recovery to zero in synthetic calcium traces and dramatically densify connectivity estimates from real v2a-RSN traces, so BSS denoising is not a neutral preprocessing step.