In this paper, we measure the biometric information correlated with the volume of blood.The biometric information measuring apparatus 10 measures the change in the blood oxygen concentration caused by the stop of respiration of the person to be measured by using the IR light signal indicative of the change in the amount of received light of IR light irradiated to the subject, and the red light signal indicative of the change in the amount of received light of red light, before the blood oxygen concentration stops breathing When it drops more, the person to be measured is notified to resume respiration.Selection diagram【課題】血液の拍出量と相関がある生体情報を精度よく測定する。【解決手段】生体情報測定装置１０は、それぞれ被測定者に照射したＩＲ光の受光量の変化を表すＩＲ光信号と、赤色光の受光量の変化を表す赤色光信号を用いて、被測定者の呼吸の停止に伴う血中酸素濃度の変化を測定し、血中酸素濃度が呼吸を停止する前より低下した場合に、呼吸を再開するよう被測定者に報知する。【選択図】図１７
