“疼的话就握着我的手” | PNAS:牵手真能减轻女性痛感
2018/03/05
“疼的话就握着我的手”——在许多影视剧中,经常会看到这样的话语。现在,最新一项研究证实,这种做法除了暖心,真的有效:科学家们发现,当握着爱人的手,可以减轻女性一半的疼痛感。


图片来源:网络

现在,不少国家的产妇在生宝宝时,都允许丈夫(或者其他亲密的人)进入产房陪护。当宝妈疼痛难忍时,可以握着对方的手。科学家们想知道,这一接触是否真的能够缓解她们的分娩之痛?

2月26日,来自于海法大学、美国科罗拉多大学、巴黎第七大学的研究小组在《PNAS》期刊发表一篇题为“Brain-to-brain coupling during handholding is associated with pain reduction”的文章证实:当女性握着爱人的手,确实可以减轻疼痛感。


图片来源:PNAS(doi.org/10.1073/pnas.1703643115)

研究团队共招募了20对夫妇。试验中,女性会被要求抓住一根水管,管内可以被灌注热水,从而引发疼痛。她们被分成3组,其中一组会牵着伴侣的手、一组伴侣会坐在旁边(但不牵手)、最后一组伴侣在隔壁房间。

值得注意的是,夫妻双方都被要求评估疼痛感(女性评估自身的,而男性评估另一半正在感受到的疼痛程度)。

结合脑电图结果显示,当牵着爱人的手时,女性感受的疼痛感可以减轻一半。而且,她们的爱人(牵着手)对疼痛的评估也与她们一致。

研究人员认为,牵手能够给正在经历疼痛的人带来两种好处:首先,接触或者被接触可以刺激大脑中释放相关化学物质(有助于忍受疼痛);其次,夫妻之间大脑中出现了某种同步现象,能够提供一种镇痛效应。他们推测,这可能类似于移情作用。

参考资料:

Study shows women experience less pain when holding loved one's hand

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  • Brain-to-brain coupling during handholding is associated with pain reduction

    The mechanisms underlying analgesia related to social touch are not clear. While recent research highlights the role of the empathy of the observer to pain relief in the target, the contribution of social interaction to analgesia is unknown. The current study examines brain-to-brain coupling during pain with interpersonal touch and tests the involvement of interbrain synchrony in pain alleviation. Romantic partners were assigned the roles of target (pain receiver) and observer (pain observer) under pain–no-pain and touch–no-touch conditions concurrent with EEG recording. Brain-to-brain coupling in alpha–mu band (8–12 Hz) was estimated by a three-step multilevel analysis procedure based on running window circular correlation coefficient and post hoc power of the findings was calculated using simulations. Our findings indicate that hand-holding during pain administration increases brain-to-brain coupling in a network that mainly involves the central regions of the pain target and the right hemisphere of the pain observer. Moreover, brain-to-brain coupling in this network was found to correlate with analgesia magnitude and observer’s empathic accuracy. These findings indicate that brain-to-brain coupling may be involved in touch-related analgesia.

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