Kawahara Jun-ichiro, Enns James T
National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan.
J Exp Psychol Hum Percept Perform. 2009 Feb;35(1):146-58. doi: 10.1037/a0013164.
When observers try to identify successive targets in a visual stream at a rate of 100 ms per item, accuracy for the 2nd target is impaired for intertarget lags of 100-500 ms. Yet, when the same stream is presented more rapidly (e.g., 50 ms per item), this pattern reverses and a 1st-target deficit is obtained. M. C. Potter, A. Staub, and D. H. O'Connor (2002) accounted for these findings with a 2-stage competition theory (detection followed by identification) in which each stage is limited by its own pool of resources. In 5 experiments we varied the items that preceded the 1st target. The results show strong influences of these leading items on the 1st-target deficit, with almost no influence on 2nd-target accuracy. This is interpreted as strong support for multiple factors influencing target accuracy in rapid visual streams
当观察者试图以每件物品100毫秒的速度识别视觉流中的连续目标时，对于目标间间隔为100 - 500毫秒的情况，第二个目标的识别准确率会受到损害。然而，当以更快的速度呈现相同的视觉流时（例如，每件物品50毫秒），这种模式会反转，并且会出现第一个目标的识别缺陷。M. C. 波特、A. 施陶布和D. H. 奥康纳（2002年）用一个两阶段竞争理论（检测后进行识别）来解释这些发现，其中每个阶段都受到其自身资源池的限制。在5个实验中，我们改变了第一个目标之前的项目。结果表明，这些引导项目对第一个目标的识别缺陷有强烈影响，而对第二个目标的准确率几乎没有影响。这被解释为对快速视觉流中影响目标准确率的多种因素的有力支持。
