记忆负载影响我们准备好在工作记忆中的视觉表示上采取行动,而不影响它们的可访问性
Rose Nasrawi1, Mika Mautner-Rohde1, Freek van Ede1
1Institute for Brain and Behavior Amsterdam, Department of Experimental and Applied Psychology, Vrije Universiteit Amsterdam, the Netherlands.
Progress in neurobiology
|January 9, 2025
概括
更高的工作记忆负载通过延迟运动动作选择而不是感官访问来减缓行为. 这表明行动准备能力降低,而不是记忆检索能力受损,当记住更多信息时,反应缓慢.
科学领域:
- 认知神经科学 认知神经科学
- 人类行为人类行为.
- 心理学 心理学 心理学
背景情况:
- 已知工作记忆中的认知负载增加会损害行为反应时间.
- 这种与负载相关的减速背后的确切机制仍在争论中,一些理论表明,感官访问受损或行动准备能力降低.
研究的目的:
- 调查工作记忆负载是否影响感官访问或行动准备.
- 区分串行搜索和行动准备模型之间的工作内存限制.
主要方法:
- 采用视觉运动任务,参与者回忆起2或4杆的方向.
- 使用脑电图 (EEG) 独立追踪视觉和运动选择的延迟.
- 脑电图时间频率分析检查了相对于记忆负载的感觉和运动处理的标记.
主要成果:
- 随着工作记忆负载的增加,行为反应时间变慢.
- 脑电图数据显示延迟的运动选择,但不是视觉选择,具有更高的记忆负载.
- 决策时间的变化与运动选择延迟相关,而不是视觉选择延迟.
结论:
- 工作记忆负载主要影响行动准备,延迟准备对感官信息采取行动.
- 工作内存中对表示的感觉访问不受内存负载的直接影响.
- 行动准备是影响在认知负载下记忆引导行为的速度的关键因素.
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