Title :
Acoustic Feedback System with Digital Signal Processor to Alert the Subject and Quantitative Visualization of Arousal Reaction Induced by the Sound Using Dynamic Characteristics of Saccadic Eye Movement: A Preliminary Study
Author :
Ueno, A. ; Manabe, S. ; Uchikawa, Y.
Author_Institution :
Dept. of Electron. & Comput. Eng., Tokyo Denki Univ., Saitama
fDate :
6/27/1905 12:00:00 AM
Abstract :
A new system has been developed to assess human alertness and to alert the subject with acoustic stimulation in accordance with the assessed level of alertness. Dynamic characteristics of saccadic eye movement (saccade: SC) were used to calculate an alertness index. Digital signal processor was adopted for the calculation. The system was tested through eye tracking tasks. The results indicated that the developed system could awaken the subject by feeding sound back to the subject. Also, arousal reaction induced by the sound was visualized quantitatively by analyzing values of the alertness index after the stimulation. These results indicate applicability of the system not only to awakening device for accident prevention, but also to a tool for investigating effects of the stimulation
Keywords :
acoustics; biomechanics; digital signal processing chips; eye; feedback; medical signal processing; acoustic feedback system; arousal reaction; digital signal processor; eye tracking; human alertness; saccadic eye movement; sound; Acoustic signal detection; Digital signal processing; Digital signal processors; Feedback; Flowcharts; Loudspeakers; Signal generators; Signal processing algorithms; Visualization; Voltage; advanced safety vehicle (ASV); alertness monitoring; saccade; scientific visualization;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1615898
