AUTHOR=Yucel Meryem A., Devor Anna , Akin Ata , Boas David TITLE=The possible role of CO2 in producing a post-stimulus CBF and BOLD undershoot JOURNAL=Frontiers in Neuroenergetics VOLUME=1 YEAR=2009 URL=https://www.frontiersin.org/journals/neuroenergetics/articles/10.3389/neuro.14.007.2009 DOI=10.3389/neuro.14.007.2009 ISSN=1662-6427