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  • Title: The effect of sleep-specific brain activity versus reduced stimulus interference on declarative memory consolidation.
    Author: Piosczyk H, Holz J, Feige B, Spiegelhalder K, Weber F, Landmann N, Kuhn M, Frase L, Riemann D, Voderholzer U, Nissen C.
    Journal: J Sleep Res; 2013 Aug; 22(4):406-13. PubMed ID: 23398120.
    Abstract:
    Studies suggest that the consolidation of newly acquired memories and underlying long-term synaptic plasticity might represent a major function of sleep. In a combined repeated-measures and parallel-group sleep laboratory study (active waking versus sleep, passive waking versus sleep), we provide evidence that brief periods of daytime sleep (42.1 ± 8.9 min of non-rapid eye movement sleep) in healthy adolescents (16 years old, all female), compared with equal periods of waking, promote the consolidation of declarative memory (word-pairs) in participants with high power in the electroencephalographic sleep spindle (sigma) frequency range. This observation supports the notion that sleep-specific brain activity when reaching a critical dose, beyond a mere reduction of interference, promotes synaptic plasticity in a hippocampal-neocortical network that underlies the consolidation of declarative memory.
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