小柯机器人

科学家确定与疼痛表征个体差异相关的脑区
2022-05-31 12:55

韩国基础科学研究所Choong-Wan Woo研究团队近日取得一项新成果。经过不懈努力,他们揭示了大脑疼痛表征的个体差异。这一研究成果发表在2022年5月30日出版的国际学术期刊《自然-神经科学》上。

研究人员通过确定与疼痛相关个体间差异性高或低的大脑区域来解决大脑在疼痛感知个体差异中的作用。研究使用13个单次试验功能性MRI数据集(n = 404,发现集)对具体疼痛预测模型进行了优化,并量化了个体化疼痛预测在体素级的重要性。对重要疼痛预测因子相关的21个确定区域,研究人员检查了这些区域中局部疼痛预测权重的个体间变异性。

高阶跨模式区域,如腹内侧和腹外侧前额叶皮层,表现出更大的个体差异;而单峰区域,如躯体运动皮层,在个体之间表现出更稳定的疼痛表征。研究人员利用一个独立的数据集(n=124)重现了这个结果。总体而言,该研究确定了疼痛处理中个体差异的大脑来源,为个性化评估和治疗疼痛提供了潜在的靶点。

据了解,确定大脑在疼痛感知个体差异中的作用对于个性化疼痛医学发展至关重要,然而缺乏这方面的研究。

附:英文原文

Title: Individual variability in brain representations of pain

Author: Kohoutov, Lada, Atlas, Lauren Y., Bchel, Christian, Buhle, Jason T., Geuter, Stephan, Jepma, Marieke, Koban, Leonie, Krishnan, Anjali, Lee, Dong Hee, Lee, Sungwoo, Roy, Mathieu, Schafer, Scott M., Schmidt, Liane, Wager, Tor D., Woo, Choong-Wan

Issue&Volume: 2022-05-30

Abstract: Characterizing cerebral contributions to individual variability in pain processing is crucial for personalized pain medicine, but has yet to be done. In the present study, we address this problem by identifying brain regions with high versus low interindividual variability in their relationship with pain. We trained idiographic pain-predictive models with 13 single-trial functional MRI datasets (n=404, discovery set) and quantified voxel-level importance for individualized pain prediction. With 21 regions identified as important pain predictors, we examined the interindividual variability of local pain-predictive weights in these regions. Higher-order transmodal regions, such as ventromedial and ventrolateral prefrontal cortices, showed larger individual variability, whereas unimodal regions, such as somatomotor cortices, showed more stable pain representations across individuals. We replicated this result in an independent dataset (n=124). Overall, our study identifies cerebral sources of individual differences in pain processing, providing potential targets for personalized assessment and treatment of pain.

DOI: 10.1038/s41593-022-01081-x

Source: https://www.nature.com/articles/s41593-022-01081-x

Nature Neuroscience:《自然—神经科学》,创刊于1998年。隶属于施普林格·自然出版集团,最新IF:28.771
官方网址:https://www.nature.com/neuro/
投稿链接:https://mts-nn.nature.com/cgi-bin/main.plex


本期文章:《自然—神经科学》:Online/在线发表

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