Unlike mammals, they only need their hypocretin system to regulate sleep at night.
与哺乳类不同，它们的增食欲素系统只需要在夜间管理睡眠。
2
Narcolepsy is apparently caused by a genetic glitch that prevents the body from either absorbing or producing enough of the neurochemical hypocretin.
嗜睡症似乎是由基因遗传导致的，该遗传会是人体无法吸收或产生足够的神经下视丘分泌素。
3
Narcolepsy is thought to be caused by a genetic glitch that prevents the body from either absorbing or producing enough of the neurochemical hypocretin.