工作記憶與注意力的互動：價值標籤的調控

The relationship between working memory and selective attention has been demonstrated by numerous studies which showed that the content of working memory biases attention. This effect, working memory-driven attentional capture, has been well demonstrated in the literature. However, the underlying attentional mechanism of this capturing effect remained unclear, and the few studies have investigated how the characteristics of the representation maintained in working memory may influence the capturing effect, including the strength of representation, memory strategy, the value of the representation which was induced by context. The aims of this five-year proposal aims to address these issues by using a dual-task paradigm that combines a memory related task and an attentional selection task. In the first year, I will investigate the how representation competition which caused by the capacity limitation of working memory modulated the capturing effect. In the second year, the influence of the memory strategy and the overlapping between memory related task and attentional selection task will be investigated. Different memory recognition tasks will be used to induced different memory strategy. In addition, different features and also objects will be used in different experiments. By cross experiment comparision, the influence of different characteristics of the representation can be examined. The present study addressed this issue using a dual-task paradigm. The participants remembered one or four spatial locations for later recognition, detecting the appearing dots, and recognized whether a probe display matched with the memorized locations. The locations of the to-be detected dots were identical to the remembered locations in the valid condition, and mismatch the remembered locations in the invalid condition. The capturing effect was reflected by faster performance in the valid condition than in the invalid condition. The locations of the dot was irrelevant to both the recognition and detection tasks. The results showed the capturing effect only when the locations of to-be detected dot exactly matching the memorized locations. Reappearance of partial spatial representation in working memory by dot detection task was insufficient to induce the capturing effect.