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Sleep-dependent consolidation of value-based learning
Journal article   Open access   Peer reviewed

Sleep-dependent consolidation of value-based learning

Bengi Baran, Dasha Daniels and Rebecca M C Spencer
PloS one, Vol.8(10), pp.e75326-e75326
2013
DOI: 10.1371/journal.pone.0075326
PMCID: PMC3793990
PMID: 24130703
url
https://doi.org/10.1371/journal.pone.0075326View
Published (Version of record) Open Access

Abstract

It has been suggested that sleep selectively enhances memories with future relevance. Given that sleep's benefits can vary by item within a learning context, the present study investigated whether the amount of sleep-dependent consolidation may vary across items based on the value of the to-be-learned material. For this purpose, we used a value-based learning paradigm in which participants studied words paired with point values. There were two groups; participants either studied the words in the evening and were tested after a 12 hr interval containing a full night of sleep, or studied the words in the morning and were tested after 12 hr of continuous daytime wake. Free recall (F(1,36) = 19.35, p<.001) and recognition accuracy (F(1,36) = 7.59, p = .01) for words were better following sleep relative to wake. However there was no difference in the linear increase in the probability of delayed recall with increasing word value for sleep and wake groups (p = .74). Thus, while encoding may vary with the value of the to-be-learned item, sleep-dependent consolidation does not.
 Young Adult Learning - physiology Humans Adolescent Mental Recall - physiology Wakefulness - physiology Adult Female Male Sleep - physiology Memory - physiology

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