PROBLEM TO BE SOLVED: To enable an insular cortex activity to be observed by a brain wave.SOLUTION: Brain's insular cortex activity extraction method includes a first step for recording brain waves from a plurality of EEG electrodes, a second step for creating a mesh-like three-dimensional model in which the brain is disassembled into a plurality of regions in correspondence with a brain structure of a subject, and performing the positioning of the EEG electrodes in correspondence with a brain/head part structure image of the subject, a third step for creating a forward model by modelling the correspondence between the activity of each brain region of the three-dimensional model and the brain wave distribution in the EGG electrodes subjected to the positioning, and a fourth step for associating the brain wave data recorded in the first step with the brain activity in a region of interest using information on the region of interest measured by fMRI and the forward model.SELECTED DRAWING: Figure 14COPYRIGHT: (C)2018,JPO&INPIT【課題】脳波により島皮質の活動を観察可能にする。【解決手段】脳の島皮質活動抽出方法は、複数のＥＥＧ電極から脳波を収録する第１ステップと、被験者の脳構造に対応させて脳を複数の部位に分解したメッシュ状の三次元モデルを作成するとともに、被験者の脳・頭部構造画像と対応させてＥＥＧ電極の位置合わせを行う第２ステップと、前記三次元モデルの各脳部位の活動と位置合わせされたＥＥＧ電極における脳波分布の対応関係をモデル化して順モデルを作成する第３ステップと、ｆＭＲＩにより測定した関心領域の情報と前記順モデルとを用いて、前記第１ステップで収録された脳波データを前記関心領域の脳活動に関連づける第４ステップとを備える。【選択図】図１４
