\n\n
来源于《系统解剖学(第 9 版)教材》
\n\n人之所以无法入睡或在睡梦中被吵醒,往往是因为耳边声音的改变,刺激神经兴奋而醒来。
\n\n而白噪音具有听觉掩蔽的作用,不仅可以将环境噪音减弱,还能屏蔽那些突然变化的干扰音,从而达到助眠和减少觉醒的效果[3]。
\n\n而且,白噪音还可以减弱耳鸣的影响,改善耳鸣患者的睡眠状况,提高其工作、生活的质量;对哭闹的新生儿也有一定助眠的作用,但一旦去除了白噪音,往往会反弹[4]。
\n\n\n\n每个人对声音的敏感度不同。有的人觉得白噪音刺耳、烦躁,如果试着用它来“催眠”,反而可能会加重睡眠问题[5]。
\n\n白噪音甚至可能还会存在危害。目前,一些动物研究显示,高强度的白噪音可能出现听力和认知功能损害,损害心脏健康[4]。而且,白噪音使用不当,如果音量太大、持续时间太长或距离太近,还会损害宝宝的听力[6]。
\n\n总之,噪音一直是困扰我们睡眠质量的一个大问题。如果你因为环境噪音而难以入睡,白噪音可能会是一个有效的解决方法。
\n\n在这科技普及的时代,大可不必再用电视机的声音替代,点开手机下载某些助眠相关软件,即可聆听真正的“自然界白噪音”。但是,请务必合理使用白噪音,时间勿长、音量勿大、距离勿近。
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