微观点滴在视觉工作记忆中显示了空间组织的保存,尽管基于位置的排练衰退了
Eelke de Vries1, Freek van Ede1
1Institute for Brain and Behavior Amsterdam, Department of Experimental and Applied Psychology, Vrije Universiteit Amsterdam, the Netherlands.
Cognition
|March 9, 2025
概括
视觉工作记忆使用空间作为支架. 即使活跃的空间排练消失了,对象位置的记忆仍然存在,这表明"静默的空间支架"支持工作记忆.
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:
- 空间对于视觉工作记忆至关重要,但在延长的延迟期间它的持久性受到争议.
- 现有的方法可能无法完全捕捉持久的空间组织.
研究的目的:
- 调查视觉工作记忆中的空间组织是否会随着时间的推移而持续下去,特别是对于偶然编码的位置.
- 区分空间排练中的衰变和稳定的空间表示.
主要方法:
- 使用新的空间眼球运动 (microsaccade) 标记器进行"基于位置的记忆力排练"和"基于位置的记忆力选择".
- 在两个实验中检查了这些标记在短 (1s),中 (3s) 和长 (5s) 工作记忆延迟期间和之后.
主要成果:
- 基于位置的排练的标记物随着工作记忆延迟而减少.
- 记忆力选择仍然固定在偶然编码的对象位置上,无论延迟长度如何.
结论:
- 视觉工作记忆中的空间组织即使在活跃的排练标记器衰变时也被保留.
- 一个"沉默的空间支架"可能支持工作记忆中的稳定空间表示.
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