Dewasmes G, Cohen-Adad F, Koubi H, Le Maho Y
Am J Physiol. 1984 Oct;247(4 Pt 2):R663-71. doi: 10.1152/ajpregu.1984.247.4.R663.
The proportion and the distribution over 24 h of the different arousal stages characterized in geese--wakefulness (W), drowsiness (D), and slow-wave (SWS) and paradoxical sleep (PS)--were studied in caged birds when fed and then fasted during about 40 days. In both the fed and fasted state, each arousal stage was distributed through numerous episodes of a short duration. The geese slept a little more during the night than during the day, a difference that was moderately emphasized during the fast. Fasting induced only a slight decrease in W. There were important changes in SWS and D in relation to the periods of fasting that were previously found to correspond to changes in lipid and protein utilization. When proteins were spared and lipids accounted for most of the energy expenditure, the fasted geese went more and more rapidly from W to SWS (proportion of D decreased from 33 to 13%/day) and slept for progressively longer periods (SWS increased from 23 to 49%/day). By contrast, when protein utilization rose, the general trend in sleep was a decrease in SWS and an increase in D. During the fast, changes in PS were in the same proportion as those in SWS. These reactions are examined for their implications in energy-saving and sleep mechanisms.
研究了笼养鹅在进食和禁食约40天期间，不同觉醒阶段（清醒（W）、嗜睡（D）、慢波睡眠（SWS）和异相睡眠（PS））在24小时内的比例及分布情况。在进食和禁食状态下，每个觉醒阶段都分布在许多短时间的时段中。鹅夜间睡眠时间比白天略长，禁食期间这种差异略有增大。禁食仅使清醒时间略有减少。慢波睡眠和嗜睡与禁食期有关，此前发现禁食期与脂质和蛋白质利用的变化相对应，且存在重要变化。当蛋白质节省，脂质占能量消耗的大部分时，禁食的鹅从清醒状态进入慢波睡眠的速度越来越快（嗜睡比例从33%降至13%/天），睡眠时间逐渐延长（慢波睡眠从23%增至49%/天）。相反，当蛋白质利用增加时，睡眠的总体趋势是慢波睡眠减少，嗜睡增加。禁食期间，异相睡眠的变化与慢波睡眠的变化比例相同。对这些反应在节能和睡眠机制方面的意义进行了研究。
