Abstract: Provided is a sensitivity evaluation system for estimating sensitivity of a subject from bio-information with high accuracy, including: an acquisition unit to acquire as biological data, a reaction of a sympathetic nervous system and a reaction of a parasympathetic nervous system; a biological data analysis unit to judge from the obtained biological data, a candidate group of sensitivity factors that the subject has; a positive/negative analysis unit to judge from information obtained from the subject, whether an inner state of the subject is pleasant or unpleasant; and a comprehensive evaluation unit to integrat analysis results of the biological data analysis unit and the positive/negative analysis unit to estimate the sensitivity comprehensively.

Abstract: In an organism identifying device, a stimulus giving section gives a thermal stimulus to a finger, an organism information measuring section measures an organism information produced by said finger in response to the stimulus, and a determining section determines whether or not the organism information includes contents that the organism reflectively responds to the organism information.

Abstract: When a finger 8 is put on a fingerprint input sensor 1, it is held in contact with living body potential deriving electrodes 21 and 22. In addition, a finger portion near the first joint is held in contact with a living body grounding electrode 3 to ground the living body. With the finger 8 pushed against the fingerprint input sensor 1 for inputting the fingerprint, finger muscle potentials signals 101 to 103 are obtained from these electrodes. A living body data measuring unit 4 takes differences of these finger muscle potentials for one another, and outputs the result as living body data potential data 104. A living body data analyzing unit 5 analyzes the potential data and frequency data of the living body potential difference data 104, and outputs analysis data 105. A living body discriminating unit 6 makes a determination, from the analysis data 105, as to whether the finger 8 is a finger of living body or a replica finger.

Abstract: An organism identification system that can identify whether or not a fingerprint image input object is a living body at a fingerprint collating time. A finger collator slides his finger at the time of inputting a fingerprint image. Meanwhile the finger is contact with bioelectric potential lead-out portions and a bioelectric potential grounding portion. Sliding of the finger causes a variation in the muscle potential of the finger. The bioelectric potential lead-out portions and the bioelectric potential grounding portion output electric signals corresponding to the potential variation to a bioelectric signal amplification section. The bioelectric signal amplification section amplifies the difference between electric signals from the bioelectric potential lead-out portions while the bioelectric potential grounding portion is at the ground potential. A signal peculiar to a living body is generated by sliding the finger. When an illegal person slides a replica, a variationless signal occurs.

Abstract: An evoked potential measuring apparatus by which an evoked potential which reflects a variation in internal condition of a human being such as a feeling of strain, a feeling of irritation or a feeling of stress can be measured in a high quality with a high degree of reliability.