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. 2014 Nov 5;6:303. doi: 10.3389/fnagi.2014.00303

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Copyright © 2014 Vermeij, van Beek, Reijs, Claassen and Kessels.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution and reproduction in other forums is permitted, provided the original author(s) or licensor 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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Hemodynamic concentration changes in the total sample of older adults. Mean (± SEM) changes of [O₂Hb] and [HHb] in the left and right hemisphere for the spatial 1-back minus 0-back contrast (A), 2-back minus 0-back contrast (B), and 2-back minus 1-back contrast (C).