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ECB-ART-51729
iScience 2023 Aug 18;268:107314. doi: 10.1016/j.isci.2023.107314.
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Sleep-related motor skill consolidation and generalizability after physical practice, motor imagery, and action observation.

Conessa A , Debarnot U , Siegler I , Boutin A .


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Sleep benefits the consolidation of motor skills learned by physical practice, mainly through periodic thalamocortical sleep spindle activity. However, motor skills can be learned without overt movement through motor imagery or action observation. Here, we investigated whether sleep spindle activity also supports the consolidation of non-physically learned movements. Forty-five electroencephalographic sleep recordings were collected during a daytime nap after motor sequence learning by physical practice, motor imagery, or action observation. Our findings reveal that a temporal cluster-based organization of sleep spindles underlies motor memory consolidation in all groups, albeit with distinct behavioral outcomes. A daytime nap offers an early sleep window promoting the retention of motor skills learned by physical practice and motor imagery, and its generalizability toward the inter-manual transfer of skill after action observation. Findings may further have practical impacts with the development of non-physical rehabilitation interventions for patients having to remaster skills following peripherical or brain injury.

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References [+] :
Albouy, Implicit oculomotor sequence learning in humans: Time course of offline processing. 2006, Pubmed