Concentration-measurement device and concentration-measurement method

摘要: A concentration measurement apparatus includes a probe 20, having light incidence section making incident on the head and detection detecting that has propagated through interior of head, CPU 14 determining temporal relative change amounts oxygenated hemoglobin deoxygenated correlation coefficient polarity slope regression line. method enable evaluation accuracy calculation possibility reverse direction blood transmission from vena cava to based phase shift between are thereby realized.