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. 2013 Sep 6;7:530. doi: 10.3389/fnhum.2013.00530

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Copyright © 2013 Ritter, Franz, Dietrich, Miltner and Weiss.

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) 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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Schematic overview of the blood oxygen level dependent (BOLD) responses in the periaqueductal gray (PAG), the nucleus Raphe dorsalis (NRD), and the rostral ventromedial medulla (RVM) (steep vs. shallow SSH for T_hot and T_warm conditions). The figure depicts means ± SE of parameter estimates for the peak voxel of the structures.