WARMING UP FOR SLEEP - GROUND-SQUIRRELS SLEEP DURING AROUSALS FROM HIBERNATION
WARMING UP FOR SLEEP - GROUND-SQUIRRELS SLEEP DURING AROUSALS FROM HIBERNATION
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DOI：
10.1016/0304-3940(91)90276-y
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发表时间：
1991-07-22
影响因子：
2.5
通讯作者：
STRIJKSTRA, AM
中科院分区：
文献类型：
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作者：
DAAN, S;BARNES, BM;STRIJKSTRA, AM
哺乳动物冬眠期间的低温被周期性的唤醒打断，唤醒的功能尚不清楚。我们报告说，北极地松鼠（Spermophilus parryii）一贯的睡眠在这些觉醒，和他们的脑电图显示的慢波活动（δ功率）的下降，这是一个下降的睡眠需求的特点。这些结果与新的假设一致，即睡眠的需要在麻木期间缓慢积累，并且需要定期返回到正常温度才能睡眠。因此，对于冬眠的哺乳动物来说，睡眠似乎是消耗能量的，不能仅仅被认为是一种节省能量的策略。
Hypothermia during mammalian hibernation is periodically interrupted by arousals to euthermy, the function of which is unknown. We report that arctic ground squirrels (Spermophilus parryii) consistently sleep during these arousals, and that their EEG shows the decrease in slow wave activity (delta-power) that is characteristic of a declining requirement for sleep. These results are consistent with the novel hypothesis that the need for sleep slowly accumulates during torpor, and that returning to euthermy is periodically required to allow sleep. Sleep thus seems to be energetically expensive for a hibernating mammal, and cannot be considered solely a strategy for saving energy.