Prefrontal Hemodynamic Changes Associated with Subjective Sense of Occlusal Discomfort

Figure 2

Comparison of the time-course of mean hemodynamic responses in participants with different severities of perceived discomfort. (a) Spatial distribution of the mean ΔOxy-Hb responses over the 22 channels located in the prefrontal area. The number and vertical lines in each subfigure show the corresponding channel number and the timing of grinding behavior. The shaded areas indicate the standard errors of the ΔOxy-Hb responses in the corresponding group. (b) Time-course changes of the mean ΔOxy-Hb (solid line) and the mean ΔdeOxy-Hb (dashed line) responses in participants with different severities of perceived discomfort in a representative channel (13). The shaded areas indicate the standard errors of the ΔOxy-Hb and ΔdeOxy-Hb responses in the corresponding group.

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