THE PATTERN OF SLOW-WAVE ACTIVITY IN SPONTANEOUSLY OCCURRING LONG SLEEP
THE PATTERN OF SLOW-WAVE ACTIVITY IN SPONTANEOUSLY OCCURRING LONG SLEEP
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DOI：
10.1111/j.1365-2869.1992.tb00005.x
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发表时间：
1992-03-01
影响因子：
4.4
通讯作者：
AKERSTEDT, T
中科院分区：
文献类型：
--
作者：
KECKLUND, G;AKERSTEDT, T
本研究的目的是估计慢波活动（SWA）的时间过程在自然发生的长睡眠发作（即兴）。16名男性轮班工人在下午轮班时接受了24小时动态多导睡眠描记术。脑电图进行频谱分析（FFT）和传统的睡眠阶段评分。SWA （0.5 ~ 4.5 Hz频带，包括非快速眼动和快速眼动睡眠）呈指数下降，并在第五或第六个睡眠周期达到渐近线。然而，一半的受试者在第一个周期中表现出减少的SWA，随后在第二个周期中恢复。第一个周期的SWA减少与rem潜伏期的减少有关，这表明现实生活环境中不受控制的外部影响可能影响了第一个周期的SWA。结果表明，在实际生活条件下，SWA随时间的下降可能偏离指数形状。
The aim of the present study was to estimate the time course of slow wave activity (SWA) in naturally occurring long sleep episodes (ad lib). Sixteen male shift workers were subjected to 24 h ambulatory polysomnography in connection with an afternoon shift. The EEG was subjected to spectral analysis (FFT) as well as to traditional sleep stage scoring. SWA (0.5-4.5 Hz band, both nonREM and REM sleep) declined exponentially and reached an asymptote by the fifth or sixth sleep cycle. However, half the subjects showed a reduced SWA in the first cycle, with a subsequent recovery in the second cycle. The SWA reduction of the first cycle was associated with a reduced REM-latency and it was suggested that uncontrolled external influences of the real life settings may have affected SWA in the first cycle. It was concluded that the decline of SWA across time may deviate from an exponential shape under real life conditions.