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- W2024277249 abstract "Performance for skills such as a sequence of finger movements improves during sleep. This has widely been interpreted as evidence for a role of sleep in strengthening skill learning. Here we propose a different interpretation. We propose that practice and sleep form different aspects of skill. To show this, we train 80 subjects on a sequence of key-presses and test at different time points to determine the amount of skill stored in transition (that is, pressing ‘2’ after ‘3’ in ‘4-3-2-1’) and ordinal (that is, pressing ‘2’ in the third ordinal position in ‘4-3-2-1’) forms. We find transition representations improve with practice and ordinal representations improve during sleep. Further, whether subjects can verbalize the trained sequence affects the formation of ordinal but not transition representations. Verbal knowledge itself does not increase over sleep. Thus, sleep encodes different representations of memory than practice, and may mediate conversion of memories between declarative and procedural forms. Sleep is implicated in consolidating procedural skills. Here, Song and Cohen train subjects on a repeating sequence of key-presses and show that practice contributes to transitional information-based aspects of skill whereas sleep contributes to ordinal information-based aspects of skill." @default.
- W2024277249 created "2016-06-24" @default.
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- W2024277249 date "2014-03-19" @default.
- W2024277249 modified "2023-10-09" @default.
- W2024277249 title "Practice and sleep form different aspects of skill" @default.
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- W2024277249 doi "https://doi.org/10.1038/ncomms4407" @default.
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