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. Author manuscript; available in PMC: 2009 Jan 1.
Published in final edited form as: Neuroimage. 2007 Aug 24;39(1):206–214. doi: 10.1016/j.neuroimage.2007.08.014

Figure 5. BOLD variability.

Figure 5

Variance in physiological BOLD data was normalized to obtain normalized variance or yfluc = σresid/ypp. For controlled feedback scans, variability was significantly reduced (**p ≤ 0.001; *p ≤ 0.01; + n.s. trend p = .07) as compared to scans in which subjects received no feedback cuing target inspiration depth.