Vestibular Autorotation Test Using Wireless Electro-oculargraphy and Electronic Gyrometry Technique

• Main Authors: Yu-Ming Chang, 張育銘
• Other Authors: Guo-She Lee
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/21271366287812995178

碩士 === 國立陽明大學 === 腦科學研究所 === 100 === The dizziness or vertigo has an incidence of about 30% among the total population, which is usually caused by vestibular dysfunction. However, there are partial limitations and disadvantages amount current vestibular function tests. In this study, we established a brand new vestibular function test, using wireless transmission technique combined with electro-oculargraphy and electronic gyrometry, thus participants could rotate their heads easily. We had assessed ten healthy participants, the assessment comprised active horizontal and vertical head movement in both open eyes and closed eyes condition. In addition, another vestibular assessment analysis was also proposed. The waveform of eyeball and head movements were conducted to cross correlation analysis, hence we could obtain quantitative vestibular function without complex calibration program. Through the cross correlation analysis, we found that the response of vestibular function showed difference with the eyes opened and closed. Furthermore, when the head rotation frequency was 0.0 ~ 1.0 Hz, the equilibrium mechanism was mostly contributed to ocular motor system, while dominated by the vestibular system at 2.0 ~ 3.0 Hz. Compare cross correlation analysis with gain of vestibular ocular reflex, they had similar results when the head rotation frequency was 1.0 ~ 3.0 Hz, and the linear correlation coefficient was 0.62 ~ 0.72. In this study, we had established a new vestibular assessment system with light weight, small size and wireless transmission to eliminate the equipment-caused aberration. This system also showed good test-retest reliability, and the intraclass correlation coefficients was 0.85 ~ 0.98.