The eye movement and eyelid activity measurement unit that measures the eye movement and eyelid activity of the subject and obtains eye movement / eyelid activity data, and based on the eye movement / eyelid activity data, the eye opening interval, the eye closing interval, the blink interval interval, And a segment determination unit that determines a cluster segment, an eye movement / eyelid activity-related information calculation unit that calculates a microsaccade protrusion degree of each of the eye-opening sections based on the eye movement / eyelid activity data, and the micro An attention deficit state estimation system comprising: an attention evaluation unit that calculates an attention evaluation for an eye opening / clustering section that is an eye opening and clustering section based on a saccade protrusion degree and the like.対象者の眼球運動及び眼瞼活動を測定し、眼球運動・眼瞼活動データを得る眼球運動・眼瞼活動測定部と、前記眼球運動・眼瞼活動データに基づいて、開眼区間、閉眼区間、瞬目区間、及び群発区間を判定する区間判定部と、前記眼球運動・眼瞼活動データに基づいて、前記開眼区間の各々のマイクロサッカード突度等を算出する眼球運動・眼瞼活動関連情報算出部と、前記マイクロサッカード突度等に基づく、開眼区間且つ群発区間である開眼・群発区間に対する注意力評価等を求める注意力評価部とを備える注意力低下状態推定システム。
