视觉工作记忆中数量和精度的权衡关系是否受个体自发控制

Whether the Trade-Off between Quantity and Quality in Visual Working Memory Is under Individual Voluntarily Control?

视觉工作记忆中记忆表征的数量和精度之间存在着负相关,这种负相关关系被视为数量和精度之间的权衡。但这一权衡过程是完全由刺激驱动,还是个体可以根据任务需求自发进行控制尚不清楚,由此引发了关于记忆资源分配机制的一场争论。本文系统地梳理了数量和精度的权衡关系是否受个体自发控制相关研究的发展历程,指出了影响个体能否自发进行控制受到记忆项目呈现时间及个体视觉工作记忆容量的影响,最后就未来研究仍需解决的问题提出进一步的建议。

There is a negative correlation between the quality and quantity of memory representations in visual working memory, and this negative correlation is seen as a trade-off between quantity and quality. However, it is unclear whether this trade-off is entirely stimulus-driven or can be controlled voluntarily by individuals according to task demands, which has led to a debate on the mechanism of memory resource allocation. This paper systematically reviews the development of research on whether the trade-off between quantity and quality is subject to individual voluntary control, and point out this voluntary control is influenced by the exposure duration and working memory capacity, and some suggestions for future research are proposed.