Sleep stage-dependent changes in tonic masseter and cortical activities in young subjects with primary sleep bruxism
Sleep stage-dependent changes in tonic masseter and cortical activities in young subjects with primary sleep bruxism
复制标题
患有原发性睡眠磨牙症的年轻受试者的强直咬肌和皮质活动的睡眠阶段依赖性变化
DOI：
10.1093/sleep/zsab207
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发表时间：
2022
期刊：
影响因子：
5.6
通讯作者：
Kato Takafumi
中科院分区：
文献类型：
--
作者：
Toyota Risa;Fukui Ken-ichi;Kamimura Mayo;Katagiri Ayano;Sato Hajime;Toyoda Hiroki;Rompre Pierre;Ikebe Kazunori;Kato Takafumi
Study ObjectivesThe本研究调查了这一假设，即受试者与原发性睡眠磨牙症（SB）表现出咬肌和皮质功能亢进，在安静的睡眠期与高频率的节奏咀嚼肌活动（RMMA）。评估了勃起事件和觉醒的频率以及勃起事件的觉醒百分比。在睡眠期间咬肌肌张力定量使用聚类分析。脑电图功率和心率变异性进行了量化，然后比较两组之间和睡眠stages.ResultsThe RMMA的频率和RMMA的觉醒的百分比显着高于SB科目比对照组在所有阶段，而这些变量为nonrhythmic orrhythmic事件组之间没有显着差异。在SB被试中，RMMA的频率在N1阶段最高，在N3和R阶段最低，而RMMA唤醒的百分比在N3阶段高于N1和R阶段。聚类分析将睡眠期间的咬肌活动分为咬肌张力和收缩两类。咬肌张力在两组中均表现出典型的阶段依赖性变化，但组间无显著差异。此外，没有显着差异，观察到脑电图功率或心率变异性groups.ConclusionYoung SB科目表现出睡眠阶段依赖性的RMMA的反应性增加，短暂的觉醒，但没有显示咬肌或皮质过度活跃在睡眠过程中。
Study ObjectivesThe present study investigated the hypothesis that subjects with primary sleep bruxism (SB) exhibit masseter and cortical hyperactivities during quiet sleep periods that are associated with a high frequency of rhythmic masticatory muscle activity (RMMA).MethodsFifteen SB and ten control participants underwent polysomnographic recordings. The frequencies of oromotor events and arousals and the percentage of arousals with oromotor events were assessed. Masseter muscle tone during sleep was quantified using a cluster analysis. Electroencephalography power and heart rate variability were quantified and then compared between the two groups and among sleep stages.ResultsThe frequency of RMMA and percentage of arousals with RMMA were significantly higher in SB subjects than in controls in all stages, while these variables for nonrhythmic oromotor events did not significantly differ between the groups. In SB subjects, the frequency of RMMA was the highest in stage N1 and the lowest in stages N3 and R, while the percentage of arousals with RMMA was higher in stage N3 than stages N1 and R. The cluster analysis classified masseter activity during sleep into two clusters for masseter tone and contractions. Masseter muscle tone showed typical stage-dependent changes in both groups but did not significantly differ between the groups. Furthermore, no significant differences were observed in electroencephalography power or heart rate variability between the groups.ConclusionYoung SB subjects exhibited sleep stage-dependent increases in the responsiveness of RMMA to transient arousals, but did not show masseter or cortical hyperactivity during sleep.