PROBLEM TO BE SOLVED: To simplify an electrode structure and acquire an electrocardiographic signal having a high S/N ratio.SOLUTION: An electrocardiographic measurement apparatus includes: a plurality of back electrodes 14 formed using electric conductive material whose electric resistance varies depending on applied pressure, the back electrodes being arranged at positions on a seat back part 12A of a seat 12 that differ from each other an electrocardiographic signal detection unit 18 for detecting an electrocardiographic signal for each individual back electrode 14 via electrostatic capacitance generated between a body surface of a crew member seating on the seat 12 and the individual back electrode 14 a pressure detection unit 20 (an electric resistance detection unit 28 and pressure conversion unit 30 thereof) for detecting pressure applied to each of the plurality of back electrodes 14 on the basis of electric resistance of the individual back electrode 14 and an electrocardiographic signal selection unit 24 for selecting, on the basis of a distribution of the pressure detected by the pressure detection unit 20, an electrocardiographic signal to be an output object from electrocardiographic signals detected for the respective individual back electrodes 14 by electrocardiographic signal detection units 18.SELECTED DRAWING: Figure 1【課題】電極構造の簡易化及びS/N比が高い心電信号の取得【解決手段】加わった圧力に応じて電気抵抗が変化する導電性材料で形成された複数の背部電極14が、シート12のシートバック部12Aのうちの互いに異なる位置に配置され、心電信号検出部18は、シート12に着座した乗員の体表と個々の背部電極14との間に発生する静電容量を通じて個々の背部電極14毎に心電信号を検出し、圧力検出部20(の電気抵抗検出部28及び圧力換算部30)は、複数の背部電極14のそれぞれに加わった圧力を、個々の背部電極14の電気抵抗に基づいて各々検出し、心電信号選択部24は、心電信号検出部18によって個々の背部電極14毎に検出された心電信号から、圧力検出部20によって検出された圧力の分布に基づいて出力対象の心電信号を選択する。【選択図】図1
