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. Author manuscript; available in PMC: 2019 Oct 15.
Published in final edited form as: Neuroimage. 2017 Sep 9;180(Pt B):448–462. doi: 10.1016/j.neuroimage.2017.09.010

Figure 3.

Figure 3

Examples of quasi-periodic patterns (QPP) measured using BOLD, a large-scale wave that is observed to repeatedly propagate across the cortex during the resting state. Coronal images of the brains of rats anesthetized with dexmedetomidine are shown, see Fig. 1B for reference. (a) Example of bilateral wave as QPP. (b) Example of unilateral wave as QPP. (c) Example of where no clear wave was present in the QPP. While many runs showed no wave after any surgery (c), bilateral waves were only present after sham callosotomy surgery (a) and unilateral waves were more present after true callosotomy surgery (b). (Reprinted with permission from Magnuson et al. (Magnuson et al., 2014a). The publisher for this copyrighted material is Mary Ann Liebert, Inc. publishers.)