Awh E, Jonides J, Reuter-Lorenz P A
Department of Psychology, University of California, San Diego, La Jolla 92093, USA.
J Exp Psychol Hum Percept Perform. 1998 Jun;24(3):780-90. doi: 10.1037//0096-1523.24.3.780.
This article reports 3 experiments that tested a hypothesis regarding the nature of rehearsal in spatial working memory, one in which discrete shifts of spatial selective attention mediate the maintenance of location-specific representations. Experiment 1 demonstrated increases in visual processing efficiency for locations held in working memory, which suggested that attention was oriented toward these locations. Experiment 2 eliminated key alternative explanations for Experiment 1 by using an identical stimulus display with a nonspatial memory task, and little or no facilitation of processing at memorized locations was found under these conditions. Finally, Experiment 3 showed that spatial working memory was impaired when participants were hindered in their ability to attend to memorized locations. It is argued that these results implicate selective spatial attention as a rehearsal mechanism for spatial working memory.
本文报告了3项实验，这些实验检验了一个关于空间工作记忆中复述本质的假设，即空间选择性注意的离散转移介导了位置特异性表征的维持。实验1表明，工作记忆中所保持位置的视觉处理效率有所提高，这表明注意力被导向了这些位置。实验2通过使用相同的刺激显示并搭配非空间记忆任务，排除了对实验1的关键替代解释，并且在这些条件下几乎没有发现对记忆位置的处理促进作用。最后，实验3表明，当参与者注意记忆位置的能力受到阻碍时，空间工作记忆会受损。有人认为，这些结果表明选择性空间注意是空间工作记忆的一种复述机制。
