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ERIC Number: EJ1112500
Record Type: Journal
Publication Date: 2016-Sep
Pages: 5
Abstractor: As Provided
ISSN: ISSN-1072-0502
Insufficient Chunk Concatenation May Underlie Changes in Sleep-Dependent Consolidation of Motor Sequence Learning in Older Adults
Bottary, Ryan; Sonni, Akshata; Wright, David; Spencer, Rebecca M. C.
Learning & Memory, v23 n9 p455-459 Sep 2016
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.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A