Latash L P, Shlyk G G, D'iakova S D
Fiziol Zh SSSR Im I M Sechenova. 1977 Dec;63(12):1625-30.
Main time characteristics of sleep were studied in 9 adult dogs in experiments with 24-hr polygraphic recordings. The all-day sleep quantity (35%), circadian distribution of sleep with the maximum between 24 and 9 hours, more rapid rise of delta-sleep (DS) in the second half of day and of REM sleep in the first hours of night -- all these data suggest that the dog sleep schedule is under considerable influence of ecological factors related to time organization of activity and sleep in humans. A relatively high amount of drowsiness in dog's sleep (nearly 25%) is comparable with DS representation. REM occupies about 20% of total sleep time. Mean REM cycle lasts 30 min. The data obtained can be used as the standards of dog sleep in neurophysiological, pharmacological and behavioral studies.
通过24小时多导睡眠记录实验，对9只成年犬的主要睡眠时相特征进行了研究。全天睡眠量（35%）、睡眠的昼夜分布在24至9小时之间达到最大值、白天后半段慢波睡眠（DS）上升更快以及夜间前几个小时快速眼动睡眠上升更快——所有这些数据表明，犬的睡眠时间表受到与人类活动和睡眠的时间组织相关的生态因素的显著影响。犬睡眠中相对较高的嗜睡量（近25%）与DS表现相当。快速眼动睡眠占总睡眠时间的约20%。平均快速眼动睡眠周期持续30分钟。所获得的数据可作为神经生理学、药理学和行为学研究中犬睡眠的标准。
