PROBLEM TO BE SOLVED: To concurrently measure an electrocardiogram signal and a living body Z.SOLUTION: A measurement apparatus includes: a signal generation unit generating a measurement signal for measuring a bioelectrical impedance a first electrode pair making contact with the left and right sides of a body of a person under measurement to supply the measurement signal generated to the body a second electrode pair placed adjacent to the first electrode pair a bioelectrical impedance measurement unit measuring the bioelectrical impedance of the person under measurement based on an electrical signal obtained from the second electrode pair in response to supplying of the measurement signal and an electrocardiogram signal measurement unit measuring an electrocardiogram signal of the person under measurement based on the electrical signal obtained from the second electrode pair. The bioelectrical impedance measurement unit and the electrocardiogram signal measurement unit concurrently operate in parallel. For example, the measurement apparatus can be applied to an authentication device for personal authentication using heart beat patterns.COPYRIGHT: (C)2013,JPO&INPIT【課題】心電図信号および生体Zを同時に測定する。【解決手段】測定装置は、生体インピーダンスを測定するための測定用信号を発生する電源部と、発生された前記測定用信号を被測定者の体に供給するために前記被測定者の体の左右に接触させる第1の電極対と、前記第1の電極対に隣接して配置された第2の電極対と、前記測定用信号の供給に応じて前記第2の電極対から得られる電気信号に基づいて前記被測定者の前記生体インピーダンスを測定する生体インピーダンス測定部と、前記第2の電極対から得られる電気信号に基づいて前記被測定者の心電図信号を測定する心電図信号測定部とを含む。生体インピーダンス測定部と心電図信号測定部は同時に並行して動作する。本開示は、例えば、心臓鼓動パターンを用いて個人認証を行う認証装置に適用できる。【選択図】図6