PROBLEM TO BE SOLVED: To grasp hemodyamics visually based on pressure brain waves detected from a subject.SOLUTION: A cuff strip wrapped around an upper arm of the subject is pressed by air pressure as prescribed, then the pressure brain waves of the subject are detected with a strain sensor 7 when the pressure is reduced, and the frequency components including Korotkoff sounds are analyzed from the detected pressure brain waves, and a spectrogram Sp is generated, showing the frequency on a vertical line and the time on a horizontal line while showing the strength (amplitude) by design and/or color, and the spectrogram Sp is displayed on a display means 3b.COPYRIGHT: (C)2012,JPO&INPIT【課題】被検者から検出した被圧迫脈波に基づいて求めた血行動態を視覚的に把握できるようにする。【解決手段】被検者の上腕に巻き付けたカフ帯を空気圧にて所定に加圧した後、減圧する際に、歪みセンサ7にて被検者の被圧迫脈波を検出し、検出した被圧迫脈波からコロトコフ音を含む周波数成分を解析して、縦軸に周波数、横軸に時間を示すと共に、強度(振幅)を模様及び/又は色彩で表すスペクトログラムSpを生成し、このスペクトログラムSpを表示手段3bに表示させる。【選択図】図4
