PROBLEM TO BE SOLVED: To improve accuracy in determining an arousal level or a concentration level.SOLUTION: An alpha wave feature amount calculation section 13 calculates a feature amount of alpha waves from electroencephalogram signals. An eye fixation-related potential feature amount calculation section 14 calculates a feature amount of an eye fixation-related potential on the basis of an eyeball moving amount and electroencephalogram signals of a subject. An arousal level determination section 15 determines an arousal level of the subject on the basis of the feature amount of the alpha waves calculated by the alpha wave feature amount calculation section 13 and the feature amount of the eye fixation-related potential calculated by the eye fixation-related potential feature amount calculation section 14.COPYRIGHT: (C)2013,JPO&INPIT【課題】覚醒度または集中度の判定精度の向上を実現すること。【解決手段】α波特徴量算出部13が、脳波信号からα波の特徴量を算出し、眼球停留関連電位特徴量算出部14が、被験者の眼球移動量および脳波信号に基づいて、眼球停留関連電位の特徴量を算出し、覚醒度判定部15が、α波特徴量算出部13において算出されたα波の特徴量と、眼球停留関連電位特徴量算出部14において算出された眼球関連電位の特徴量とに基づいて、被験者の覚醒度を判定する。【選択図】図2
