This paper describes the correlation between the classified subjective evaluation based on Visual Analog Scale (VAS) and the changes of vital signs for the effects of viewing to the pleasant/unpleasant images which are specified as IAPS (International Affective Picture System). The Heart Rate Variability (HRV) and the Electroencephalogram (EEG) are recorded for 16 healthy subjects (17〜20 years old, male) when they view to the pleasant or unpleasant images. And in order to investigate the psychological state change, the subjects are required to answer VAS questionnaire about subjects' emotional taste. Furthermore, the relationship between the vital sign data and questionnaire results are discussed. As a result, it is suggested that there exits conflicting for appearance tendency of vital signs between the subjects who evaluated positively by unpleasant images, and the subjects who evaluated in the negative.
