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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Neurogastroenterol Motil. 2013 Oct 8;25(12):10.1111/nmo.12238. doi: 10.1111/nmo.12238

Figure 2. Frequency histogram of cross correlation (CC) values of the brain swallowing network (BSN) across study conditions (tube i, tube ii, buffer and acid).

Figure 2

CC values of the BSN were not normally distributed and the histogram was similarly skewed to the right across all study conditions. CC values were Fisher z-transformed to assure normalized distribution of the data for further analyses. The absolute CC values higher than 0.165 (|r| > 0.165, two-tailed p < 0.01) are considered statistically significant. The dotted vertical line demonstrates that the majority of CC values were located in interaction section of BOLD positive and negative regions (76%) and were not statistically significant.