工作记忆维护的模式特异性和跨模式动态:来自听觉和视觉刺激的证据
Zheng Wang1,2, Shibo Ma1,2, Qianxi Cheng1,2
1School of Psychology, Shenzhen University, Shenzhen, China.
Psychophysiology
|November 28, 2025
概括
工作记忆使用共享和特定的大脑网络. 听觉 - 语言任务独特地涉及排练电路,将特定领域和一般机制集成到一个共同的注意力架构中.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 工作记忆研究 工作记忆研究
背景情况:
- 工作记忆 (WM) 涉及到共享和模式特定的神经资源.
- 讨论了WM中域一般和模式特定机制之间的精确相互作用.
- 了解这种相互作用对于全面的WM模型至关重要.
研究的目的:
- 调查视觉和听觉工作记忆背后的神经机制.
- 区分域一般和模式特定的 WM 贡献.
- 探索不同类型的刺激如何调节脑网络参与和连接在WM任务期间.
主要方法:
- 利用了一种顺序延迟匹配范式,与视觉,非语言听觉和口头听觉刺激相匹配.
- 采用单变量GLM,基于ROI和搜索灯多像素模式分析 (MVPA).
- 进行了功能连接分析,以检查刺激和负载依赖的调制.
主要成果:
- 听觉辅音字母显示出更高的行为准确性.
- 一个核心的前对对联网络 (dlPFC,PPC,insula,小脑) 在所有条件中都活跃.
- 在视觉空间任务中,PPC的激活率更高;在听觉任务中,岛屿和时区域的激活率更高.
- MVPA揭示了可以分离但重叠的表示.
- 功能连接性根据刺激类型和认知负载有显著的变化.
结论:
- 视觉和听觉WM共享一个共同的前线对象网络,但招募不同的模式特定区域.
- 听觉-言语WM独特地参与了口音排练电路.
- 结果支持WM的综合模型,结合域特定和域一般的组件.
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