36小时睡眠剥夺对青年军人表象旋转加工机制的影响

Effects of 36h Sleep Deprivation on Processing Mechanism of Presentation Rotation in Young Soldiers

目的探讨36h睡眠剥夺(SD)对青年军人表象旋转加工脑电生理机制的影响。方法 12名健康青年军人在36小时睡眠剥夺条件下,分别在睡眠剥夺前后进行手旋转任务的事件相关电位(ERP)测定。测量P500的潜伏期、波幅。结果 1与SD0h波幅[左手:(5.8±1.9)μ;右手:(8.6±3.4)μV]相比,SD 36h左右手波幅[左手:(3.6±1.6)μV;右手:(4.7±2.1)μV]均显著降低(t=5.36,6.22;P<0.01);2与SD 0h潜伏期[左手:(525.3±76.3)ms;右手:(504.4±72.2)ms]相比,SD 36h左右手潜伏期[左手:(588.3±92.7)ms;右手:(567.5±67.1)ms]均显著延迟(t=6.09,6.16;P<0.01);3与SD 0h相比,尤其发生在180°旋转处SD 36h潜伏期显著延迟,波幅显著降低(P<0.001)。结论 36h睡眠剥夺在一定程度上损害表象旋转操作加工机制,其中严重损害解剖学上不可能的手旋转角度的表象操作过程。

Objective To explore the effect of 36h sleep deprivation on the brain electrophysiological indicator of presentation rotation in young soldiers.Methods During 36h sleep deprivation,15 normal healthy young soldiers were tested on hand-rotation tests by event-related potentials system before and after sleep deprivation,and measuring the incubation period and amplitude of P500.Results ① Compared with amplitudes in SD 0h,amplitudes in SD 36h were significantly lower for left hand [（5.8±1.9）μV vs.（3.6±1.6）μV] and right hand [（8.6±3.4）μV vs.（4.7±2.1）μV,t=5.36,6.22,P0.01].② Compared with latencies in SD 0h,latencies in SD 36h were significantly longer for left hand [（525.3±76.3）ms vs.（588.3±92.7）ms] and right hand [（504.4±72.2）ms vs.（567.5±67.1）ms,t=6.09,6.16,P0.01].③Compared with SD 0h,lower amplitudes and longer latencies in SD 36h were significantly found especially at 180° rotation.Conclusion 36h sleep deprivation can harm the processing mechanism of presentation rotation operating in a certain extent.It may be even more interesting to emphasise that the more impairment in the processing mechanism of presentation rotation operating are found in the anatomical constraints of real hand movements.