PROBLEM TO BE SOLVED: To confirm that synchronizable brain wave signals can be acquired without waiting time, after an optical sensor is attached to a finger tip, in detecting the brain wave signals from the finger tip of a subject.SOLUTION: A pulse detection device includes: a pulse detection sensor that detects pulses from the finger tip of the subject a signal attenuation means that attenuates signals, based on detection signals detected by the pulse detection sensor and a signal display means that displays voltage of detection signals attenuated by the signal attenuation means so as to be differentiated into three or more stages, by changing the number of three or more light emitting diodes to be lighted, regarding the diodes having three or more diodes.COPYRIGHT: (C)2013,JPO&INPIT【課題】被検体の指先から脈波を検出する際に、光センサを指先に装着した後で、待ち時間を取ることなく、同期可能な脈波信号が取得できたことを確認可能とする。【解決手段】この脈拍検出装置は、被検体の指先から脈拍を検出する脈拍検出センサと、前記脈拍検出センサにより検出された検出信号に基づく信号を減衰させる減衰手段と、前記減衰手段により減衰した検出信号の電圧を、3以上有する発光ダイオードを点灯させる数を変えることにより、3以上の複数段階に識別して表示する信号表示手段とを備える。【選択図】図2
