PROBLEM TO BE SOLVED: To provide an alertness assessment device capable of highly accurately assessing alertness.SOLUTION: An alertness assessment device includes: a brain wave signal extracting section 14 for extracting a brain wave signal of a subject in a predetermined time by using the time of completion of saccade as a reference a correlation value determining section 13 for determining a correlation value indicating the correlation between the amount of alertness of the subject and the extracted brain wave signal, by using the information related to the eyeball movement of the subject a weighted average signal computing section 15 for weighting and adding the extracted brain signal in accordance with the correlation value and an alertness assessment unit 16 for assessing the alertness of the subject on the basis of the weighted average signal.COPYRIGHT: (C)2014,JPO&INPIT【課題】高精度に注意状態を推定できる注意状態推定装置を提供する。【解決手段】サッケード終了時点を基準に、所定時間における被験者の脳波信号を抽出する脳波信号抽出部14と、被験者の眼球関連情報を用いて、被験者の注意量と抽出された脳波信号との相関を示す相関値を決定する相関値決定部13と、相関値に応じて、抽出された脳波信号を重み付けして加算する加重平均信号算出部15と、加重平均信号に基づいて、被験者の注意状態を推定する注意状態推定部16と、を備える。【選択図】図6
