空间工作记忆负载影响真实场景搜索绩效的眼动研究

Effect of Spatial Working Memory Load on Real-World Scene Search Performance:An Eye Movement Study

采用空间工作记忆任务和真实场景图片搜索任务相结合的双任务范式,结合眼动技术将搜索过程划分为起始阶段、扫描阶段和确认阶段,探讨空间工作记忆负载对真实场景搜索绩效的影响机制,同时考察场景情境一致性和视觉混乱度的调节作用。结果发现:空间工作记忆负载在搜索成绩和效率方面的主效应显著,且与视觉混乱度存在交互作用;空间工作记忆负载对真实场景搜索成绩的影响主要表现在搜索过程的起始阶段和确认阶段。由此可见,空间工作记忆负载会降低真实场景图片搜索的成绩和效率,且受视觉混乱度的调节。

By employing the dual task （spatial working memory task and real-world scene search task） paradigm and combining the eye-movement recording technology to divide the search process into three phases, that is initial phase, scanning phase and decision phase. The present study explored the effect of spatial working memory load on real-world scene search performance and the modulation by visual clutter and scene context. Results showed that the main effect of visual working memory load on search performance was significant, the interaction with visual clutter was also significant. Further, the spatial working memory load mainly had influence on the initial phase and decision phase of search process. In sum, the spatial working memory load reduced the search performance, and this effect was modulated by visual clutter.