The effect of complex cognitive training on subsequent night sleep
The effect of complex cognitive training on subsequent night sleep
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DOI：
10.1111/jsr.12929
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发表时间：
2020-12-01
影响因子：
4.4
通讯作者：
Ficca, Gianluca
中科院分区：
文献类型：
--
作者：
Cerasuolo, Mariangela;Conte, Francesca;Ficca, Gianluca
使用午睡设计，我们最近表明，在睡前进行复杂的认知任务训练可以通过减少睡眠碎片来改善客观睡眠质量。为了将我们的研究结果扩展到夜间睡眠，我们在这里评估了睡前多组件认知任务对报告习惯性睡眠不良的受试者随后睡眠事件的影响，据称这些受试者的特征是睡眠高度碎片化。在受试者内部设计中，20名主观睡眠不良者在三种情况下接受了多导睡眠图记录：(a)基线睡眠（BL）；(b)训练后睡眠（TR），在此之前进行复杂的生态任务，即修改版本的文字游戏Ruzzle；(c)活动后控制睡眠（AC），在此之前进行控制任务。在睡眠连续性（总唤醒频率和短暂唤醒频率）和其他稳定性指标（状态转换和功能不确定周期频率、功能不确定时间）方面，与交流组和BL组相比，TR组睡眠更有组织（周期数更多，周期时间更长），微唤醒频率更低。与BL组相比，TR组和AC组的唤醒频率也有所降低。我们的研究结果表明，认知训练对随后的夜间睡眠有明显的影响，主要包括增加睡眠的连续性、稳定性和组织性。在我们的睡眠不好的样本中，这些训练后的变化最终代表了显著的睡眠改善，也一致反映在主观睡眠质量感知上。因此，生态睡眠前认知训练应进一步研究，作为睡眠障碍人群标准治疗中易于获得的补充方法。
Using a nap design, we have recently shown that training at a complex cognitive task at bedtime improves objective sleep quality by reducing sleep fragmentation. In order to extend our findings to nighttime sleep, here we assess the impact of a multi-componential cognitive task at bedtime on the subsequent sleep episode of subjects reporting habitual bad sleep, allegedly characterized by high sleep fragmentation. In a within-subjects design, 20 subjective bad sleepers underwent polysomnographic recording in three conditions: (a) baseline sleep (BL); (b) post-training sleep (TR), preceded by a complex ecological task, i.e. a modified version of the word game Ruzzle; (c) post-active control sleep (AC), preceded by a control task. Sleep in TR was more organized (higher number of cycles and longer time spent in cycles) and showed lower microarousal frequency than in AC and BL. As for sleep continuity (total and brief awakening frequency) and other stability measures (state transition and functional uncertainty period frequency, time in functional uncertainty), both TR and AC showed significant improvements compared with BL. Arousal frequency was also reduced in TR relative to BL. Our results show a clear impact of cognitive training on subsequent night sleep, basically consisting of an increase in sleep continuity, stability and organization. In our sample of bad sleepers, these post-training changes end up representing a notable sleep improvement, also consistently reflected in subjective sleep quality perception. Therefore, ecological pre-sleep cognitive training should be further studied as an easily accessible complementary approach in standard therapies for sleep-disordered populations.