594-二次怀孕对女性大脑结构与功能的独特影响 episode artwork

EPISODE · Mar 5, 2026 · 22 MIN

594-二次怀孕对女性大脑结构与功能的独特影响

from 聊聊Sci

这项前瞻性队列研究利用多模态核磁共振成像(MRI)技术,深入探讨了二次怀孕对女性大脑结构与功能的独特影响。研究发现,虽然两次怀孕都会导致皮层灰质体积显著减少,但其影响的神经通路存在明显差异。首次怀孕主要重塑与自我意识相关的默认模式网络,而二次怀孕则对负责外部注意力和动作目标的背侧注意及体感运动网络产生了更强的调节作用。此外,白质纤维束的组织变化也呈现出差异性,且这些大脑转变与母亲的育儿行为及围产期心理健康密切相关。总体而言,该研究证明了女性大脑在多次生育过程中会经历持续且具有差异性的神经可塑性,以适应不断变化的母职需求。References: Straathof M, Halmans S, Pouwels P J W, et al. The effects of a second pregnancy on women’s brain structure and function[J]. Nature Communications, 2026, 17(1): 1495.前往小宇宙评论区与主播互动

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594-二次怀孕对女性大脑结构与功能的独特影响

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