警觉状态在前庭温度试验中的意义

目的：评定前庭对冷、热水刺激后反应的敏感性。方法：将４０例志愿参试者随机分为数学计算组、回答问题组、听音乐级和听故事组，前两组为主动警觉组，后且为被动警觉组，每组１０例，分别给左耳冷、热水刺激，应用ＨＢ－３ＥＮＧ微机处理系统眼震电图仪记录极盛期水平眼震慢相角速度２０ｓ，结果：两个主动警觉组与两个被动警觉组相比有极显著性差异。结论：临床进行前庭温度试验试验采用主动警觉较为合理。

The significance of the alerting tasks in the vestibular's caloric test

OBJECTIVE: To evaluate the vestibular's sensitivity to the stimulus of the cold and hot water. METHOD: Forty volunteers are randomly divided into four groups, group one for maths calculation, group two for answering the questions (they are active alerting groups) and group three and four for listening to music and to stories respectively (they are passive alerting groups). Each group has ten volunteers, their left ears are separately stimulated with the cold and hot water, recording the nystagmus slow phase velocity for 20 s at the highest level with the nystagmography instrument of HB-3 ENG computer treatment system. RESULT: There are significant differences between the two active alerting groups and the two passive ones (P < 0.01). CONCLUSION: In performing the vestibular's caloric test, it's more reasonable for clinic to use active alerting tasks.