A Prototype Real-Time System for Assessing Vigilance Levels and for Alerting the Subject with Sound Stimulation

• 영문명: A Prototype Real-Time System for Assessing Vigilance Levels and for Alerting the Subject with Sound Stimulation
• 발행기관: 한국과학기술원 인간친화 복지 로봇 시스템 연구센터
• 저자명: A. Ueno S. Kokubun Y. Uchikawa
• 간행물 정보: 『International Journal of Assistive Robotics and Mechatronics』International Journal of Assistive Robotics and Mechatronics Vol.8 No.1, 19~27쪽, 전체 9쪽
• 주제분류: 공학 > 제어계측공학
• 파일형태: PDF
• 발행일자: 2007.03.30

영문 초록

  This paper presents a prototype real-time system that assesses the vigilance level of a subject and alerts the subject with sound stimulation when the assessed vigilance level is below a predetermined threshold. An acceleration property of saccadic eye movement, which is measured with a limbus eye tracker, is used as an index of the vigilance level. The algorithms for computing the index and for triggering sound stimulation according to the index value were implemented in a digital signal processor for realizing a real-time system. The developed system was evaluated through eye tracking tasks. The results indicated that the developed system stably assessed the vigilance level and stimulated the subject as designed when necessary. Although more precise and wide investigation is necessary to make a conclusion, we could confirm quantitatively that the system was able to arouse the subject by using sound stimulation. These results indicate a feasibility of the developed system not only for vigilance monitoring and subject stimulating, but also for exploring quantitatively effective conditions of stimulation to arouse the subject.

목차

Abstract
1. INTRODUCTION
2. DESCRIPITON OF THE  PROPOSED SYSTEM
3. VALIDATION OF THE SYSTEM
4. DISCUSSION
5. CONCLUSION AND FUTURE WORK
ACKNOWLEDGEMENTS
REFERENCES