Fig. 6.

ROC analysis of the average of oxy-Hb signal contrast in the right prefrontal channels optimized using well-formed formulae. The right upper panel represents ROC curves for CHs 6 and 10, respectively. The right lower panel includes the ROC curve adopting OR and AND logics. In OR logic, a patient was identified as normal when either CHs 6 or 10 was activated. In AND logic, a patient was identified as normal when both CHs 6 and 10 were activated.