为什么抱臂能帮助抑制疼痛

Although the information about the pain's location was accurately processed, the brain had trouble integration this information correctly with information about the nature of the sensation. "When you cross your arms these maps are not activated together anymore, leading to less effective brain processing of sensory stimuli, including pain, being perceived as weaker," he said in a statement.
尽管对关于疼痛位置的信息进行精确加工处理，但是大脑还是很难将这些信息和感觉的本质准确地整合在一起。“当你交叉抱臂时，这些映射不再集中活跃起来，导致感官刺激的大脑处理更没作用，包括认为疼痛较轻。”他在一个发言中说。

This idea is supported by earlier research showing that only children older than five make confused judgments about the order of sensations felt on their hands when they are crossed.
这种观点得到早期研究的支持，它表明的大于5岁的孩子，当他们抱臂时，会对他们手上的感觉的顺序判断感到困惑。

Practically, it's unlikely that this will result in significant pain relief for pain in areas other than the hands, and the ongoing duration of the relief is not known. However, the study adds to understanding of how the brain processes pain, which could help the development of new types of anesthetics.
实际上，抱臂不会减少除了手的其他部位的明显疼痛感，而且疼痛缓解的持续时间也不明确。然而，研究还了解了大脑如何对疼痛进行处理，帮助发明新的麻醉药。

And, perhaps it sheds light on the classic posture of adolescent defiance: standing with one's arms crossed, cursing.  Both cursing and arm crossing could reduce emotional torment. After all, the "hurt" or "unpleasant" aspects of pain are processed by the same brain regions, whether the insult is psychological or comes from a physical injury or illness.
而且这可能阐明了青少年反抗的经典姿势：双手交叉站着，骂人。骂人和抱臂可以降低情感痛苦。毕竟，无论这种侮辱是心理的还是身体的受伤或疾病，“受伤”或“不愉快”方面的疼痛都是在同一个脑区进行处理的。