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环球科学

做梦，能抚平不好的记忆与情绪｜科学60秒

环环球科学约 2 分钟

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多做梦，少焦虑？
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多做梦，少焦虑@Syaibatul Hamdi from Pixabay
睡眠有助于我们巩固记忆，还有助于我们学习新知识。在快速眼动睡眠期（REM），也就是做梦阶段，大脑会停止释放压力化学物质，一项研究发现，做梦甚至可以舒缓我们对某些经历的紧张联想。
研究人员给35名受试者观看了容易引起情绪激动的图像，半数受试者在同一天的早上和晚上观看了这些图像，另一半受试者在第一天晚上观看，然后在睡醒后的第二天早上再次观看。利用功能磁共振成像（fMRI）和脑电图（EEG），研究人员记录了受试者的大脑活动。
在两次观看之间睡了一觉的受试者表示，在第二次观看图像时他们的情绪反应有了明显降低。脑部影像也显示他们的杏仁核活动减少了，而杏仁核正是负责处理情绪的区域。
这项研究发表在《当代生物学》（Current Biology）杂志上。
研究人员指出，快速眼动睡眠期去甲肾上腺素水平会急剧下降，在这一时期……[查看全文]

Dreams Help Soothe Your Bad Memories


Sleep helps us consolidate our memories. Sleep also helps us learn. During REM sleep, which is the dreaming stage of sleep, the brain stops releasing stress chemicals. Now a new study finds that as we dream we can even soothe our stressful associations to certain experiences.
Scientists scanned the brains of 35 subjects while they viewed emotionally arousing images. Half of the subjects viewed the images in the morning and again in the evening of the same day. The other half viewed the same images in the evening and then again the next morning after sleeping.
Those who slept between viewings reported a significant decrease in their emotional reaction to seeing the images the second time. And brain scans corroborated the self-reports, showing a reduction of activity in the amygdala, an area responsible for processing emotions.
The research was published in the journal Current Biology.
The researchers note that by processing...[full transcript]

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论文信息

van der Helm, E., Yao, J., Dutt, S., Rao, V., Saletin, Jared M. and Walker, Matthew P. (2011). REM Sleep Depotentiates Amygdala Activity to Previous Emotional Experiences. Current Biology, 21(23), pp.2029–2032.

DOI: 10.1016/j.cub.2011.10.052

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