A kind of arousal determines equipment (100) equipped with generating unit (120), operational part (130), specified portions (140) and part (180). Generating unit (120) generates heart rate interval variability data, and the instruction of these data is changed heart rate interval, the patient of heart rate is indicated based on heart rate signal one. There is the frequency that the calculating section (130) passes through using bandpass filter scheduled width may pass the frequency band of frequency band, change simultaneously heart beat interval variability data, the bandpass filter for calculating each frequency band of spectrum density applies it. The each frequency band for the spectral density that specified portions (140) specific characteristic point is calculated becomes maximum, and determination unit (180) determines that the object of the arousal is based on specified feature point.
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