We performed the t-test to determine the differences in active channels between the 2 data groups and found that of the 34 subjects, 21 showed significant differences in
activity in some channels when judging a product as expensive and inexpensive. The rate of divergence between the presented price and predicted price correlated to oxyHb
concentrations. The mean of accuracy of classifying a product as expensive and inexpensive was estimated to be more than 70% using SVM.