Pan Yi, Luo Qianying, Cheng Min
Department of Psychology, Hangzhou Normal University, Hangzhou, China.
Zhejiang University of Finance and Economics, Hangzhou, China.
Atten Percept Psychophys. 2016 Aug;78(6):1625-32. doi: 10.3758/s13414-016-1138-z.
Previous research has indicated that attention can be biased toward those stimuli matching the contents of working memory and thereby facilitates visual processing at the location of the memory-matching stimuli. However, whether this working memory-driven attentional modulation takes place on early perceptual processes remains unclear. Our present results showed that working memory-driven attention improved identification of a brief Landolt target presented alone in the visual field. Because the suprathreshold target appeared without any external noise added (i.e., no distractors or masks), the results suggest that working memory-driven attention enhances the target signal at early perceptual stages of visual processing. Furthermore, given that performance in the Landolt target identification task indexes spatial resolution, this attentional facilitation indicates that working memory-driven attention can boost early perceptual processing via enhancement of spatial resolution at the attended location.
先前的研究表明，注意力可能会偏向那些与工作记忆内容相匹配的刺激，从而促进记忆匹配刺激位置处的视觉处理。然而，这种由工作记忆驱动的注意力调节是否发生在早期感知过程中仍不清楚。我们目前的结果表明，由工作记忆驱动的注意力提高了单独呈现在视野中的简短兰多尔特（Landolt）目标的识别能力。由于阈上目标是在没有添加任何外部噪声（即没有干扰物或掩蔽物）的情况下出现的，结果表明由工作记忆驱动的注意力在视觉处理的早期感知阶段增强了目标信号。此外，鉴于兰多尔特目标识别任务中的表现可作为空间分辨率的指标，这种注意力促进表明由工作记忆驱动的注意力可以通过增强被关注位置的空间分辨率来促进早期感知处理。
