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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Neuroimage. 2016 Sep 28;146:715–723. doi: 10.1016/j.neuroimage.2016.09.063

Figure 1.

Figure 1

Illustration of the concomitant CO2 and O2 modulation. (a) Paradigm of the gas inhalation. (b) Demonstration of the MRI-compatible gas delivery system. (c) Averaged EtCO2, Et O2 and ΔBOLD signal time courses from the healthy subjects.