Abstract

For the first time, continuous registration of motor activity and electroencephalogram for 40 days was carried out in four individuals of the naked mole rat (Heterocephalus glaber) in isolated conditions in the laboratory. A clear circadian rhythm of motor activity was found, with a gradual decrease during the night and an increase during the day, which remained both in the 12L/12D mode and in conditions of complete darkness. The rest states occupied, on average, about half the time of the day. There were both typical and atypical sleep periods, in which REM sleep episodes preceded NREM sleep periods. REM sleep percentage was unusually high (up to 50% of the total sleep time). During REM sleep episodes, a synchronized two-phase high-amplitude rhythm with a frequency of 12–16 Hz was recorded in the EEG. In addition, there were hard-to-identify periods of sleep, combining elements of both NREM and REM sleep. The sleep structure of naked mole rats resembles that of evolutionarily ancient species, as well as the “disorganized” sleep characteristic of the early stages of ontogenesis in altricial mammals.

中文翻译：

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隔离下裸鼹鼠（Heterocephalus glaber）的运动活动和“新生”睡眠

摘要

首次对4只裸鼹鼠（Heterocephalus glaber) 在实验室的隔离条件下。发现运动活动有明显的昼夜节律，夜间逐渐减少，白天增加，在 12L/12D 模式和完全黑暗的条件下都保持不变。其余各州平均占一天中的一半左右。有典型和非典型睡眠期，其中 REM 睡眠发作先于 NREM 睡眠期。REM 睡眠百分比异常高（高达总睡眠时间的 50%）。在 REM 睡眠发作期间，EEG 中记录了频率为 12-16 Hz 的同步两相高振幅节律。此外，还有难以识别的睡眠时期，结合了 NREM 和 REM 睡眠的元素。裸鼹鼠的睡眠结构类似于进化上古老的物种，