Sleigh J W, Andrzejowski J, Steyn-Ross A, Steyn-Ross M
Intensive Care Unit, Waikato Hospital, Hamilton, New Zealand.
Anesth Analg. 1999 Mar;88(3):659-61. doi: 10.1097/00000539-199903000-00035.
How does physiological sleep affect the Bispectral Index (BIS)? We collected electroencephalographic (EEG) data from five subjects during the early part of the night, comparing the changes in the BIS with the conventional EEG stages of sleep. We found that the BIS was a consistent marker of depth of sleep. Light sleep occurred at BIS values of 75-90, slow-wave sleep occurred at BIS values of 20-70, and rapid eye movement sleep occurred at BIS values of 75-92. The effects of natural sleep on the BIS seem to be similar to the effects of general anesthesia on the BIS. The BIS may have a role in monitoring depth of sleep.
Electroencephalographic data were collected from five subjects during sleep. We found that the Bispectral Index decreased during increasing depth of sleep in a fashion very similar to the decrease in Bispectral Index that occurs during general anesthesia. This study further highlights the electroencephalographic similarities of states of sleep and general anesthesia.
生理睡眠如何影响脑电双频指数（BIS）？我们在夜间早期收集了5名受试者的脑电图（EEG）数据，将BIS的变化与传统睡眠脑电图阶段进行比较。我们发现，BIS是睡眠深度的一个一致指标。浅睡眠发生在BIS值为75 - 90时，慢波睡眠发生在BIS值为20 - 70时，快速眼动睡眠发生在BIS值为75 - 92时。自然睡眠对BIS的影响似乎与全身麻醉对BIS的影响相似。BIS可能在监测睡眠深度方面发挥作用。
在睡眠期间从5名受试者收集了脑电图数据。我们发现，随着睡眠深度增加，脑电双频指数下降，其方式与全身麻醉期间脑电双频指数的下降非常相似。这项研究进一步突出了睡眠状态与全身麻醉在脑电图方面的相似性。
