Abstract：
The present study reports the results of an electrophysiological analysis of sleep in the East African root rat, Tachyoryctes splendens, belonging to the rodent subfamily Spalacinae. Telemetric electroencephalographic (EEG) and electromyographic recordings, with associated video recording, on three root rats over a continuous 72 h period (12 h light/12 h dark cycle) were analyzed. The analysis revealed that the East African root rat has a total sleep time (TST) of 8.9 h per day. Despite this relatively short total sleep time in comparison to fossorial rodents, nonrapid eye movement (non-REM) sleep and rapid eye movement (REM) sleep states showed similar physiological signatures to that observed in other rodents and no unusual sleep states were observed. REM occupied 19.7% of TST, which is within the range observed in other rodents. The root rats were extremely active during the dark period, and appeared to spend much of the light period in quiet wake while maintaining vigilance (as determined from both EEG recordings and behavioral observation). These recordings were made under normocapnic environmental conditions, which contrasts with the hypercapnic environment of their natural burrows.
摘要：
本研究报告了东非根大鼠睡眠的电生理分析结果，Tachyorycessplendens,属于啮齿动物亚科。遥测脑电图（EEG）和肌电图记录，与相关的视频录制，在连续72小时（12小时光照/12小时黑暗周期）的三只根大鼠上进行了分析。分析表明，东非根鼠的总睡眠时间（TST）为每天8.9h。尽管与啮齿动物相比总睡眠时间相对较短，非快速眼动(non-REM)睡眠和快速眼动(REM)睡眠状态显示出与其他啮齿类动物相似的生理特征,未观察到异常睡眠状态.REM占TST的19.7%,在其他啮齿动物中观察到的范围内。根老鼠在黑暗时期非常活跃，并且似乎在安静的唤醒中度过了大部分光期，同时保持警惕（根据EEG记录和行为观察确定）。这些录音是在正常的环境条件下进行的，这与他们的自然洞穴的高二氧化碳环境形成鲜明对比。
