感官同胞体的全球重新绘制在儿童发育早期出现
Raffaele Tucciarelli1,2, Laura Bird3, Zdenek Straka4
1MRC Cognition & Brain Sciences Unit, University of Cambridge, Cambridge, UK. r.tucciarelli@ucl.ac.uk.
Nature communications
|February 24, 2026
概括
有肢体差异的儿童的神经可塑性显示出早期皮质重绘. 这种由感官剥夺和运动学习驱动的大脑适应,在成年时保持稳定.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 神经成像是一种神经成像.
背景情况:
- 先天性感官剥夺,特别是来自上肢的差异,为神经可塑性提供了洞察力.
- 早期感官剥夺和晚期运动技能的发展之间在塑造大脑图中的相互作用尚未完全理解.
研究的目的:
- 研究主要体感皮层中大规模皮层重绘的机制.
- 在具有先天性上肢差异的个体中,区分剥夺驱动的和依赖使用的可塑性.
主要方法:
- 使用儿科神经成像 (fMRI,DTI) 和半生态行为分析.
- 儿童 (5-7岁) 和成年人 (>25岁) 脑部结构和功能的比较,具有单边上肢先天性肢体差异.
主要成果:
- 感官同胞体的全球皮层重绘是在发育早期建立的,并持续到成年.
- 剥夺驱动的恒常性可塑性对这种早期的重新绘制有显著的贡献.
- 基于Hebbian的学习解释了不同年龄组可塑性大小的个体差异.
结论:
- 皮质地图显示出显著的早期建立和稳定性,即使有显著的行为适应.
- 了解这些可塑性机制对于与感官和运动发育相关的干预至关重要.
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