Psychophysiological research on stress-induced sleep bruxism in children

本研究采用睡前心理任务法，以睡眠质量和心率变异性（HRV）为指标，研究交感神经活动增强对睡眠和夜间磨牙症的影响。在清醒状态和睡眠状态下，用HRV评价的交感神经活动在任务夜高于非任务夜。本研究经验性地表明，睡前1小时在明亮的灯光下进行一些兴奋性活动，可以影响儿童的整夜睡眠质量和压力诱导的睡眠磨牙症。

We investigated the effect of elevated sympathetic nerve activity on following sleep and sleep bruxism using the psychological tasks just before bedtime with sampling sleep quality and heart rate variability (HRV). Sympathetic nerve activities which evaluated with HRV were higher for the Task night than for the No-task night during both the waking state and the sleeping state. The present study empirically indicated that all-night sleep quality and stress-induced sleep bruxism in children can be affected by some exciting activities with bright lights 1-hour before bedtime.