The Sleep Nullifying Apparatus: A Highly Efficient Method of Sleep Depriving Drosophila.

The Sleep Nullifying Apparatus: A Highly Efficient Method of Sleep Depriving Drosophila.
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DOI:
10.3791/62105
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发表时间:
2020-12-14
期刊:
Journal of visualized experiments : JoVE
影响因子:
--
通讯作者:
Shaw PJ
Shaw PJ
中科院分区:
其他
文献类型:
--
作者:
Melnattur K;Morgan E;Duong V;Kalra A;Shaw PJ

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睡眠内稳态,即睡眠缺失后观察到的睡眠增加,是整个动物王国中用于识别睡眠的定义标准之一。因此,睡眠剥夺和睡眠限制是通常用来深入了解睡眠功能的有力工具。尽管如此,睡眠剥夺实验本身就存在问题,因为剥夺刺激本身可能是观察到的生理和行为变化的原因。因此,成功的睡眠剥夺技术应该使动物保持清醒,理想情况下,在不引起大量意想不到的后果的情况下,导致强劲的睡眠反弹。在这里,我们描述了果蝇的睡眠剥夺技术。睡眠抵消装置(SNAP)每隔10秒进行一次刺激,以诱导负地向性。尽管这种刺激是可预测的,但即使在睡眠驱力强的果蝇中,SNAP也能有效地阻止95%的夜间睡眠。重要的是,随后的稳态反应与使用手剥夺所获得的非常相似。可以修改刺激的时间和间隔,以尽量减少睡眠损失,从而检查刺激对生理和行为的非特异性影响。SNAP也可以用于睡眠限制和评估唤醒阈值。SNAP是一种强大的睡眠中断技术,可以用来更好地了解睡眠功能。
Sleep homeostasis, the increase in sleep observed following sleep loss, is one of the defining criteria used to identify sleep throughout the animal kingdom. As a consequence, sleep deprivation and sleep restriction are powerful tools that are commonly used to provide insight into sleep function. Nonetheless, sleep deprivation experiments are inherently problematic in that the deprivation stimulus itself may be the cause of observed changes in physiology and behavior. Accordingly, successful sleep deprivation techniques should keep animals awake and, ideally, result in a robust sleep rebound without also inducing a large number of unintended consequences. Here, we describe a sleep deprivation technique for Drosophila melanogaster. The Sleep Nullifying Apparatus (SNAP) administers a stimulus every 10s to induce negative geotaxis. Although the stimulus is predictable, the SNAP effectively prevents >95% of nighttime sleep even in flies with high sleep drive. Importantly, the subsequent homeostatic response is very similar to that achieved using hand-deprivation. The timing and spacing of the stimuli can be modified to minimize sleep loss and thus examine non-specific effects of the stimulus on physiology and behavior. The SNAP can also be used for sleep restriction and to assess arousal thresholds. The SNAP is a powerful sleep disruption technique that can be used to better understand sleep function.
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