Disclosed herein is quantitative evaluation of sensitivity including: extracting cerebral physiological information items respectively related to axes of a multi-axis sensitivity model from regions of interest relevant to pleasure/displeasure, activation/deactivation, and a sense of expectation, the axes including a pleasure/displeasure axis, an activation/deactivation axis, and a sense of expectation axis； and evaluating the sensitivity using the cerebral physiological information items of the axes of the multi-axis sensitivity model.
