视觉工作记忆中的混合和混合:项目间的竞争是在编码过程中是特征特定的,在维护过程中是特征一般的
Janna W Wennberg1, John T Serences2,3
1Department of Psychology, University of California, San Diego, La Jolla, CA, USA. jwennber@ucsd.edu.
Attention, perception & psychophysics
|August 12, 2024
概括
视觉工作记忆 (WM) 容量限制源于项目竞争. 存储期间的这种竞争不是特征特定的,发生在更高阶的大脑结构中,而不是感觉处理.
科学领域:
- 认知神经科学 认知神经科学
- 心理学 心理学 心理学
背景情况:
- 视觉工作记忆 (WM) 对于认知至关重要,但由于存储项目的竞争而受到限制.
- 了解这种项目间竞争的性质是定位WM容量限制的关键.
研究的目的:
- 调查视觉工作记忆中的竞争是否取决于项目特征的相似性.
- 为了确定干扰是否发生在感官或后感官处理阶段.
主要方法:
- 实验1:在同质与异质视觉显示器中比较WM精度.
- 实验2:采用回调任务来区分编码与存储干扰.
主要成果:
- 同质显示显示出比异质显示更差的WM性能,最初表明特征特定干扰.
- 然而,追溯显示,储存期间的竞争本身并不是特征特定的.
结论:
- 项目间的竞争,因此WM容量限制,可能发生在更高阶的认知结构中.
- 这些结构整合了来自各种特征特定表示的信息,而不是仅仅依赖于感官水平的竞争.
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