Scholarlink

<p>This study investigated the role of offline consolidation, specifically sleep, in transforming memories strengthened by retrieval practice into stable long-term representations. Forty-eight participants learned weakly associated Chinese word pairs via restudy(RS), retrieval practice with feedback (RP), and retrieval practice without feedback (NRP). After encoding, a nap group slept while a wake group remained awake. Recall was tested after 90 min and 24 h. Critically, only for NRP items did the nap group show significantly less forgetting (i.e., a reduced recall change rate) than the wake group. Furthermore, the NRP recall change rate correlated positively with sleep-specific neurophysiological markers (fast spindle density and fast spindle-ndPAC coupling). These findings demonstrate that initially labile memories formed by NRP undergo offline, sleep-dependent consolidation (involving neural replay indexed by spindles), integrated with online processes, to achieve long-term stability.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Offline consolidation mechanisms of the retrieval practice effect: an analysis based on EEG signal characteristics

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月28日

查看全文
  • Jing Zhang,
  • Xiaoning Huo,
  • Hongbo Lv,
  • Jiahua Xu,
  • Xiaofeng Ma

摘要

This study investigated the role of offline consolidation, specifically sleep, in transforming memories strengthened by retrieval practice into stable long-term representations. Forty-eight participants learned weakly associated Chinese word pairs via restudy(RS), retrieval practice with feedback (RP), and retrieval practice without feedback (NRP). After encoding, a nap group slept while a wake group remained awake. Recall was tested after 90 min and 24 h. Critically, only for NRP items did the nap group show significantly less forgetting (i.e., a reduced recall change rate) than the wake group. Furthermore, the NRP recall change rate correlated positively with sleep-specific neurophysiological markers (fast spindle density and fast spindle-ndPAC coupling). These findings demonstrate that initially labile memories formed by NRP undergo offline, sleep-dependent consolidation (involving neural replay indexed by spindles), integrated with online processes, to achieve long-term stability.