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. 2021 May 13;12:639782. doi: 10.3389/fphys.2021.639782

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Copyright © 2021 McKetton, Sam, Poublanc, Crawley, Sobczyk, Venkatraghavan, Duffin, Fisher and Mikulis.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Brain average maps displaying the correlations between the BOLD signal and P_ETCO₂ time course during resting states in (A) the poikilocapnic condition, and (B) the isocapnic condition.