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全球局部处理的半球不对称的个体差异在年轻人和老年人中

Haiwen Chen¹, Anne M Aimola Davies¹

¹School of Medicine and Psychology, The Australian National University, Canberra, Australia.

|December 11, 2025

概括

大脑半球显示专业处理:右边为全球,左边为本地. 虽然这种大脑不对称性随着年龄的增长而持续,但个体差异可能解释了各种研究结果.

科学领域:

神经科学是一个神经科学.
认知心理学认知心理学
人类大脑解剖学人类大脑解剖学

背景情况:

大脑半球在全球局部处理方面表现出功能不对称.
全球处理专注于右半球,局部处理在左半球.
这种半球不对称性被认为会随着年龄的增长而保持不变,尽管老年人可能在全球任务上表现更差.

研究的目的:

调查半球不对称性,用于跨年龄组的全球-本地处理.
检查半球不对称的个体差异是否存在.
探索之前的小组级研究中不一致的发现的潜在解释.

主要方法:

使用分割视野设计与层次数字任务一起使用.
参与者 (127名年轻人,58名老年人) 短暂地在左侧或右侧视野中观看刺激.
这种设计允许对侧半球进行初始处理,评估半球专业化.

主要成果:

两个年龄组都显示全球人物的右半球专业化 (左视野) 和当地人物的左半球专业化 (右视野).
与年轻人相比,老年人在全球层次数字上总体表现明显差.
个别分析揭示了具有不同半球不对称性模式的子组,而不仅仅是预测的模式.

结论:

全球局部处理的半球不对称性存在于年轻人和老年人中.
在右撇子参与者中观察到半球不对称模式的个体差异.
这些个别变化可能解释了以往小样本规模的小组级研究中发现的不一致性.

关键词:

半球半球不对称性全球-本地处理.个人差异是个人的差异.年龄较大的成年人.左右半球衰老假说

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