Sleep enhances motor sequence learning (MSL) in young adults by concatenating subsequences (“chunks”) formed during skill acquisition. To examine whether this process is reduced in aging, we assessed performance changes on the MSL task following overnight sleep or daytime wake in healthy young and older adults. Young adult performance enhancement was correlated with nREM2 sleep, and facilitated by preferential improvement of slowest within-sequence transitions. This effect was markedly reduced in older adults, and accompanied by diminished sigma power density (12–15 Hz) during nREM2 sleep, suggesting that diminished chunk concatenation following sleep may underlie reduced consolidation of MSL in older adults.
Insufficient chunk concatenation may underlie changes in sleep-dependent consolidation of motor sequence learning in older adults
R. Bottary,Akshata Sonni,David Wright,R. Spencer
Published 2016 in Learning & memory (Cold Spring Harbor, N.Y.)
ABSTRACT
PUBLICATION RECORD
- Publication year
2016
- Venue
Learning & memory (Cold Spring Harbor, N.Y.)
- Publication date
2016-09-01
- Fields of study
Biology, Medicine, Psychology
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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