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Zh Vyssh Nerv Deiat Im I P Pavlova. 2011 Mar-Apr;61(2):161-9.

[Effect of daytime nap on consolidation of declarative memory in humans].

[Article in Russian]

Abstract

We studied effects of a daytime nap (1 hour) with including only NREM sleep on performance of declarative memory task (60 semantically unrelated word pairs) and general functional state. During training, procedure of learning of 30 word pairs was presented once, and that of the other 30 pairs was repeated twice. Strength of the task acquisition was tested. Subjects participated in two experiments: basic and control one. After learning participants either took a nap (basic experiment) or kept awake looking movies (control experiment). In 4.5 hours after the training session all the subjects were retested. As compared to the subjects who stayed awake during the training-retesting interval, subjects who had a NREM nap demonstrated enhanced performance. Concerning the strength of task acquisition, sleep-dependent performance was observed only for the word pairs learned once. Naps did not affect the functional state assessed by the reaction time dynamics and psychological testing.

PMID:
21675222
[Indexed for MEDLINE]

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