工作记忆表征的重新激活会影响注意力指导
Xiaowei Che1,2, Haomin Lian1, Feiyan Zhang2
1Department of Psychology, Shandong Normal University, Jinan, P. R. China.
Psychophysiology
|January 6, 2024
概括
工作记忆 (WM) 表示的动态性影响视觉搜索. 这些表示的重新激活和干扰抑制一起工作,在搜索任务期间控制注意力.
科学领域:
- 认知神经科学 认知神经科学
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
背景情况:
- 工作记忆 (WM) 存储越来越被理解为一个动态的神经过程.
- WM表示的时间动态可能会影响超越记忆存储的认知功能,例如视觉搜索.
- 了解WM表示动态和注意力控制之间的相互作用至关重要.
研究的目的:
- 调查WM表示的时间动态是否影响视觉搜索性能.
- 检查在视觉搜索过程中随着时间的推移,WM表示重新激活和分心抑制之间的相互作用.
- 确定WM精度要求如何调节这些过程.
主要方法:
- 利用脑电图 (EEG) 和与事件相关的光学信号 (EROS) 来追踪视觉搜索期间的WM表示重新激活.
- 采用视觉搜索任务,参与者在高或低精度条件下在WM中保持颜色.
- 通过上述机会解码精度定义了WM表示的重新激活,并分析了它与干扰器抑制的关系.
主要成果:
- 在高精度WM要求下,WM匹配的分心器吸引了更多的注意力,WM表示更频繁地被重新激活 (EEG).
- 在高精度要求下,EROS数据显示,WM匹配与WM不匹配的分心器在224ms时增加了尾皮质活动.
- 在搜索期间的表示重新激活直接预测了注意力捕获,而搜索前的重新激活则通过分心抑制影响了捕获.
结论:
- WM表示的重新激活和分心抑制动态相互作用,在视觉搜索期间影响注意力捕获.
- WM表示的精度调节了注意力被分心器所捕捉的程度.
- 这些发现凸显了动态WM过程在引导注意力和保持任务重点方面发挥的关键作用.
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