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Development and Verification of Real Time Subjective Sensibility Evaluation System  

Chung, Soon-Cheol (Department of Biomedical Engineering, College of Medicine, Konkuk Univeristy)
Min, Byung-Chan (Ergonomics Lab., Korea Research Institute of Standards and Science)
Publication Information
Journal of Biomedical Engineering Research / v.24, no.4, 2003 , pp. 355-361 More about this Journal
Abstract
In the present study, a new Real Time Subjective Evaluation (RTSSE) system was developed. The system is composed of two parts: a sensibility input part and sensibility evaluation part. The sensibility input part receives values, which are recorded on an input board using a stylus and digital tablet, from each subject's evaluation of his/her own subjective sensibility towards a particular stimulus. The sensibility evaluation part displays the level of pleasantness and arousal on one or two dimensions in real time. An experiment was conducted in order to investigate the feasibility and effectiveness of the RTSSE system. The present study compared Galvanic Skin Response (GSR) with the RTSSE by presenting 28 subjects in their 20s with pictures arousing either positive or negative sensibility. Following the experiment, an off-line subjective assessment using a questionnaire was given to the same subjects. According to the correlation coefficients, changes in subjective sensibility caused by the positive visual stimulus were related more closely to GSR, from the positive visual stimulus, and changes in subjective sensibility caused by the negative visual stimulus were related more closely to GSR from the negative visual stimulus. The questionnaire results showed marked similarity to the average responses of the RTSSE. In conclusion, the most remarkable characteristic of the present system is that it not only assesses the average sensibility when stimuli are presented, but also shows the changing strength of sensibility over time.
Keywords
Real Time Subjective Sensibility Evaluation; Subjective assessment; Human sensibility;
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