[Daytime napping and its effects on memory consolidation].

An important problem of modern fabrication is the lowered labor productivity and occupational safety due to fatigue. In many cases, it is the result of sleep deprivation, circadian rhythm disruption or the type of the procedures. The effective way to restore fatigue-induced functionality is a short-term daytime sleep. The term «power nap» has been introduced to emphasize its positive effect on some cognitive functions. This review considers the effects of short-term daytime sleep of various duration on memory consolidation. Short-term daytime sleep for up to 30 minutes between 1 p.m and 3 p.m can be recommended to improve the effectiveness of the intellectual work. These measures are intended to improve declarative memory without subsequent sleep inertia.