32h睡眠剥夺对选择性注意能力的影响

Influence of 32-hour sleep deprivation on selective attention

目的 :探讨睡眠剥夺对选择性注意任务各阶段的影响及其程度 .方法 :1 2名健康男性在 32h睡眠剥夺前后完成6种模式的选择性注意任务 ,该 6种模式任务测量选择性注意过程中的刺激编码、反应选择、运动调节阶段的变化特点 .本研究为自身前后对比设计 .结果 :校正分析结果显示 ,睡眠剥夺前后正确反应的C2模式下平均反应时、C1模式下变异系数、C1与C2间变异系数差别的差异显著 (P <0 .0 5 ) ;总反应的C1模式下平均反应时的差异显著 (P <0 .0 5 ) ;C2模式下忽视性错误数、A1与A2、C1与C2模式间忽视性错误数之差的差异显著 .结论 :32h睡眠剥夺后反应速度、动作稳定性、操作正确性均降低 ,完成低难度的任务时尤为明显 。

AIM: To study the influence of 32 hour sleep deprivation on selective attention. METHODS: Twelve young healthy male performed 6 kinds of selective attention tasks, which measured the ability of encoding, response selection and motor adjustment before and after 32 hour sleep deprivation. RESULTS: Correction analysis showed that before and after the sleep deprivation, there were significant differences in the average reaction time in C2, the abnorm coefficient in C1, and the margin of the abnorm coefficient of correct responses in both C1 and C2. The differences of average reaction time of the all responses in C1, the omission errors in C2, the margin of omission errors in both A1 and A2, and the margin of C1 and C2 were significant before and after sleep deprivation. CONCLUSION: The response velocity, stability of motor and correct rate of performance decrease after a 32 hour sleep deprivation, especially in performing easier tasks. The change is mainly during the stages of encoding and motor adjustment, and is not so significant during the stage of response selection.