PROBLEM TO BE SOLVED: To select and eliminate a noise signal showing a change similar to that of an objective biological signal.SOLUTION: A biological light measurement apparatus is provided which comprises a plurality of light irradiating means that irradiate a subject with light, a plurality of light receiving means that detect light irradiating the subject and propagated through the inside of the subject, and an arithmetic section that calculates blood kinetics of a plurality of elements inside of the subject using detection signals detected by the light receiving means. The arithmetic section has a separating operation section that separates a plurality of signals from the detection signals, a selection section that calculates correlation coefficients of the plurality of signals separated by the separating operation section and selects signals having correlation coefficients of or larger than a predetermined value as noise signals, and reconstructing operation section that reconstructs detection signals while eliminating the noise signals selected by the selection section.COPYRIGHT: (C)2008,JPO&INPIT【課題】 目的の生体信号と類似した変化を示す雑音信号を選別し、除去する。【解決手段】 本発明は、被検体に光を照射する複数の光照射手段と、前記被検体に照射され前記被検体内部を伝播した光を検出する複数の受光手段と、前記受光手段で検出された検出信号から、前記被検体内部の複数要素の血液動態を演算する演算部とを有し、前記演算部は、前記検出信号から複数の信号を分離する分離演算部と、前記分離演算部で分離された前記複数の信号間の相関係数を算出し、前記相関係数が所定値以上の信号を雑音信号として選択する選択部と、前記選択部で選択された雑音信号を除いた検出信号を再構成する再構成演算部とを有することを特徴とする生体光計測装置により達成される。【選択図】 図1
