Figure 4
Hemodynamic responses for the averaged change concentration of ∆HbO between Session 1 and Session 2. The ∆HbO represents the average interval from the start to the end of the task (0–60 s) acquired from 30 participants. The solid red line and dotted blue line are ∆HbOs of Session 1 and Session 2, respectively. The corresponding shaded colors are the standard deviations (s.d.) from the mean signals. The hemodynamic signals between the two sessions are markedly different (\(t=3.297; ^{***}p<0.001\)), indicating the role of biomarkers for those who show impulse buying patterns.
