Does Motor Memory Reactivation through Practice and Post-Learning Sleep Modulate Consolidation?

IF 2.1 Q3 CLINICAL NEUROLOGY
Whitney Stee, Philippe Peigneux
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Abstract

Retrieving previously stored information makes memory traces labile again and can trigger restabilization in a strengthened or weakened form depending on the reactivation condition. Available evidence for long-term performance changes upon reactivation of motor memories and the effect of post-learning sleep on their consolidation remains scarce, and so does the data on the ways in which subsequent reactivation of motor memories interacts with sleep-related consolidation. Eighty young volunteers learned (Day 1) a 12-element Serial Reaction Time Task (SRTT) before a post-training Regular Sleep (RS) or Sleep Deprivation (SD) night, either followed (Day 2) by morning motor reactivation through a short SRTT testing or no motor activity. Consolidation was assessed after three recovery nights (Day 5). A 2 × 2 ANOVA carried on proportional offline gains did not evidence significant Reactivation (Morning Reactivation/No Morning Reactivation; p = 0.098), post-training Sleep (RS/SD; p = 0.301) or Sleep*Reactivation interaction (p = 0.257) effect. Our results are in line with prior studies suggesting a lack of supplementary performance gains upon reactivation, and other studies that failed to disclose post-learning sleep-related effects on performance improvement. However, lack of overt behavioural effects does not detract from the possibility of sleep- or reconsolidation-related covert neurophysiological changes underlying similar behavioural performance levels.

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通过练习和学习后睡眠激活运动记忆是否能调节巩固?
检索以前存储的信息会使记忆轨迹再次不稳定,并可能根据重新激活条件以增强或减弱的形式触发重新激活。关于运动记忆重新激活后长期表现变化以及学习后睡眠对其巩固的影响的现有证据仍然很少,关于随后运动记忆的重新激活与睡眠相关巩固相互作用的数据也很少。80名年轻志愿者在训练后的常规睡眠(RS)或睡眠剥夺(SD)之夜之前(第1天)学习了一项由12个元素组成的连续反应时间任务(SRTT),然后(第2天)通过短暂的SRTT测试或无运动活动进行晨动再激活。在三个恢复之夜(第5天)后评估合并情况。按比例离线增益进行的2×2 ANOVA没有证明显著的再激活(早晨再激活/没有早晨再激活;p=0.098)、训练后睡眠(RS/SD;p=0.301)或睡眠*再激活交互作用(p=0.257)效应。我们的研究结果与先前的研究一致,先前的研究表明,重新激活后缺乏补充的成绩提升,而其他研究则未能揭示学习后睡眠对成绩提升的相关影响。然而,缺乏明显的行为影响并没有降低类似行为表现水平下与睡眠或再巩固相关的隐蔽神经生理学变化的可能性。
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来源期刊
Clocks & Sleep
Clocks & Sleep Multiple-
CiteScore
4.40
自引率
0.00%
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0
审稿时长
7 weeks
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