由视听联想和感官体验引起的功能性和结构性可塑性
Fazilet Zeynep Yildirim-Keles1,2, Pinar Demirayak3,4, Hulusi Kafaligonul5,6
1Department of Psychology, Boğaziçi University, Istanbul, Türkiye.
Brain structure & function
|June 8, 2025
概括
被动地接触到跨模式关联可以改变成年人的大脑. 这项研究表明,视听配对诱导了大脑的功能和结构变化,证明了经验依赖的神经可塑性.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 感官感知是一种感官感知.
背景情况:
- 交叉模式的关联显著影响知觉和行为.
- 了解这些关联如何诱导成年大脑的变化至关重要.
- 关于被动交叉模式暴露的经验依赖可塑性存在有限的知识.
研究的目的:
- 研究被动视听协会导致的功能和结构性大脑变化.
- 为了确定成年人经验依赖的跨模式可塑性的程度.
主要方法:
- 利用了一种视听协会范式,将左视觉运动刺激与听觉音调配对.
- 检查了静止状态的功能连接和皮质厚度.
- 训练 (右半球) 与未训练 (左半球) 视觉区域的比较变化.
主要成果:
- 观察到训练有素的视觉区域和更高阶的大脑区域之间的功能连接性增加.
- 在未经训练的视觉区域中发现功能连接性减少,表明视野特异性.
- 皮层厚度分析揭示了显著的半球不对称性,主要发生在右半球的变化.
- 在高水平关联皮层中发现了广泛的变化,在低水平感官区域的影响不那么明显.
结论:
- 被动交叉关联可以诱导成年大脑的功能性和结构性可塑性.
- 这些变化是特定于受刺激的视野,并显示半球不对称.
- 这些发现对理解日常生活中的感知和神经可塑性有影响.
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