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. Author manuscript; available in PMC: 2011 Sep 8.
Published in final edited form as: Neuroimage. 2008 Jul 11;43(2):297–311. doi: 10.1016/j.neuroimage.2008.06.038

Fig. 3.

Fig. 3

(Left) A segment of a raw InI time course and synchronized ECG trace appears in black. (Right) Power spectral density of the same InI data time series shows frequency peaks for cardiac and respiratory components.