High intention to fall asleep causes sleep fragmentationстатья
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Дата последнего поиска статьи во внешних источниках: 4 декабря 2016 г.
Аннотация:The aim of this study was to investigate the effects of intention to fall
asleep on sleep quality in good sleepers using polysomnographic and
subjective nap parameters. We hypothesized that high intention to sleep
would lead to arousal, worsening sleep quality. A counterbalanced 2 9 2
experimental design with one intra-individual (neutral versus motivating
instruction) and one inter-individual (instruction sequence) variable
was used. Thirty-three good sleepers (22 females; mean age:
24.1 8.4 years) each attended two 1-h daytime polysomnographic
recording sessions in the laboratory. When providing motivating instruction,
the experimenter insisted on the importance of falling asleep as
quickly as possible and promised a financial reward. Compared with
neutral instruction, motivating instruction was associated with increased
waking after sleep onset, number of awakenings and arousal index
during napping. No relationship between instruction and subjective nap
appraisal was found. The effect of high intention on sleep fragmentation
remained significant after controlling for habitual napping, depression,
anxiety and sleepiness. Thus, our findings suggest that high intention to
fall asleep worsened sleep quality, especially in terms of sleep
fragmentation, in good sleepers.