Figure 4.

Results of the contrast analysis comparing BOLD signal changes between the TSSP and TSSP‐C conditions in the FM group. (a) On the left is an illustration of the task paradigms convolved with the hemodynamic response function as used in the GLM analysis (red = TSSP paradigm, blue = TSSP‐C). (b) A midline sagittal slice from the functional data of one participant is shown for reference and illustrates the approximate location of the midbrain, pons, medulla, and C6 cord segment. (c) Key areas with significantly different responses to the stimulation paradigm are demonstrated in the vicinity of the NTS and RVM in the medulla. The results are overlaid on high resolution transverse slices. The color scale indicates the significance of areas with different responses between the conditions. [Color figure can be viewed in the online issue, which is available at http://wileyonlinelibrary.com.]