Han Suk Won, Kim Min-Shik
Yonsei University, Seoul, Korea.
Percept Psychophys. 2008 Jul;70(5):916-23. doi: 10.3758/pp.70.5.916.
The present study examined the effect of spatial working memory load on the attentional cuing effect. It is well-known that spatial working memory and spatial attention functionally overlap or share a common resource. Given this functional overlapping, it is possible that spatial working memory would also interact with the attentional cuing effect. Considering the distinction between channel selection and channel enhancement by attention (Prinzmetal, McCool, & Park, 2005), we expected that the interaction between spatial working memory and the cuing effect would differ with attentional processing type. Two experiments conducted with the spatial cuing paradigm showed that the magnitude of the cuing effect as measured by reaction time, reflecting channel selection, was uninfluenced by spatial working memory load. In contrast, spatial working memory load reduced the cuing effect as measured by accuracy, reflecting channel enhancement. These results suggest that spatial working memory load impairs signal enhancement by attention and does not influence attentional orienting per se. The interaction between spatial working memory and visual perception is also discussed.
本研究考察了空间工作记忆负荷对注意线索化效应的影响。众所周知，空间工作记忆和空间注意在功能上重叠或共享共同资源。鉴于这种功能重叠，空间工作记忆也有可能与注意线索化效应相互作用。考虑到注意的通道选择和通道增强之间的区别（Prinzmetal、McCool和Park，2005），我们预期空间工作记忆与线索化效应之间的相互作用会因注意加工类型的不同而有所差异。采用空间线索化范式进行的两项实验表明，以反应时衡量的线索化效应大小反映了通道选择，不受空间工作记忆负荷的影响。相比之下，空间工作记忆负荷降低了以准确性衡量的线索化效应，反映了通道增强。这些结果表明，空间工作记忆负荷会损害注意的信号增强，而不会影响注意定向本身。同时还讨论了空间工作记忆与视觉感知之间的相互作用。
