从认知抽象到适应性行为:自闭症青少年概念学习的神经基础
bioRxiv : the preprint server for biology
|February 6, 2026
概括
自闭症青少年往往难以将学到的知识概括起来. 这项研究发现,大多数自闭症青少年使用抽象 (基于原型) 的表征来概括,挑战先前的假设,并将这种能力与更好的适应性功能联系起来.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 认知科学 认知科学
背景情况:
- 自闭症谱系障碍 (ASD) 与将所学知识推广到新情况的挑战有关.
- 这种概括困难可能源于形成抽象表示的困难,可能是由于对局部细节的关注而不是整体信息的关注.
- 以前的假设表明,自闭症个体更多地依赖于具体的,以示例为基础的表征,而不是抽象的.
研究的目的:
- 调查自闭症青少年在类别泛化过程中使用的表示策略 (抽象与特定).
- 探索与这些表示策略相关的神经相关性.
- 检查概括策略,自闭症特征和适应性功能之间的关系.
主要方法:
- 64名没有智力障碍的自闭症青少年 (14-18岁) 在功能磁共振成像 (fMRI) 中执行了类别概括任务.
- 计算模型被用来区分抽象 (基于原型) 和特定 (基于示例) 的表示及其神经支.
- 分析了与适应性功能和自闭症特征的关联.
主要成果:
- 与预测相反,大多数自闭症青少年表现出一种主要的基于原型的概括策略.
- 一个子组表现出没有一致的代表性依赖的概括,而少数人则努力形成类别结构.
- 原型表示与双边腹中前额叶皮层 (VMPFC) 和下额叶 (IPL) 相关,而示例表示涉及骨.
- 更好的概括能力与改进的适应性功能相关.
- 左IPL中与原型相关的激活增加预测了那些具有更高自闭症特征的人的更好的适应性功能.
结论:
- 这些发现挑战了在自闭症中概念学习仅仅基于超特异性处理的概念.
- 自闭症患者使用的表达策略存在显著的变化.
- 涉及抽象表征的神经通路,特别是在IPL中,对于支持自闭症中现实世界的适应性行为至关重要.
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