Abstract: Disclosed herein is a technique for observing the insular cortex activity by using electroencephalograms. A method for sampling cerebral insular cortex activity includes: recording electroencephalograms (EEGs) provided by a plurality of EEG electrodes; creating a three-dimensional model in the form of a mesh in which a subject's brain is decomposed into a plurality of sites according to the subject's brain structure and positioning the plurality of EEG electrodes by reference to an image representing the subject's brain and head structure; creating a forward model by modeling a correlation between the activities of the respective brain sites of the three-dimensional model and an electroencephalogram distribution of the positioned EEG electrodes; and associating, by reference to information about a region of interest measured by functional magnetic resonance imaging (fMRI) and the forward model, data about the electroencephalograms recorded with the cerebral activity of the region of interest.

Abstract: 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.

Abstract: Disclosed herein is a technique for observing the insular cortex activity by using electroencephalograms. A method for sampling cerebral insular cortex activity includes: recording electroencephalograms (EEGs) provided by a plurality of EEG electrodes; creating a three-dimensional model in the form of a mesh in which a subject's brain is decomposed into a plurality of sites according to the subject's brain structure and positioning the plurality of EEG electrodes by reference to an image representing the subject's brain and head structure; creating a forward model by modeling a correlation between the activities of the respective brain sites of the three-dimensional model and an electroencephalogram distribution of the positioned EEG electrodes; and associating, by reference to information about a region of interest measured by functional magnetic resonance imaging (fMRI) and the forward model, data about the electroencephalograms recorded with the cerebral activity of the region of interest.