Journal
CORTEX
Volume 49, Issue 8, Pages 2221-2228Publisher
ELSEVIER MASSON, CORPORATION OFFICE
DOI: 10.1016/j.cortex.2012.11.014
Keywords
Sleep deprivation; Memory consolidation; Emotion; Interference
Funding
- FNRSCC [1.5.184.10.F]
- FRSM [3.4.594.08.F]
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Consistent evidence nowadays indicates that sleep protects declarative memory from lexical interference. However, little is known about its effect against emotional interference. In a within-subject counterbalanced design, participants learned a list of word pairs after a mood induction procedure (MIP), then slept or stayed awake during the post-learning night. After two recovery nights, half of the list was recalled after a similar mood induction than at the encoding session (no interference condition) and the other half after a different mood induction (interference condition). Amongst participants for whom the MIP was effective, an emotional interference effect appeared only in the sleep-deprived condition, with a lower recall of word pairs subjected to contextual interference than of the other pairs. These findings support the hypothesis of a decoupling between memories and their affective blanket during post-learning sleep, protecting recent memories against emotional contextual interference. (C) 2012 Elsevier Ltd. All rights reserved.
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