Vierck Esther, Kiesel Andrea
Department of Psychology, University of Otago, Dunedin, New Zealand.
Acta Psychol (Amst). 2008 Feb;127(2):309-23. doi: 10.1016/j.actpsy.2007.06.004. Epub 2007 Jul 30.
Change detection in rapidly alternating pictures separated by a blank frame has been shown to be very difficult (e.g., [Rensink, R. A., O'Regan, J. K., & Clark, J. J. (1997). To see or not to see: The need for attention to perceive changes in scenes. Psychological Science, 8, 368-373]). The three experiments reported here focus on the mechanism behind detection. More specifically, we explored whether information about the stimulus material accumulates in visual memory and thereby improves change detection. For that purpose the first experiment varied the number of repetitions of the original and modified stimulus version. Results showed that detection improved with more repetitions. The second experiment demonstrated that repetition performance improved more when both the original and the modified picture were repeated. Finally, the third experiment strengthened these findings by showing poorer detection performance when the repetition sequence was randomized. Together, our findings suggest accumulation of information in memory over picture presentations and moreover improved performance when both picture types were repeated. These results underline the importance of developing representations for both picture versions in change detection.
在由空白帧分隔的快速交替图片中进行变化检测已被证明非常困难（例如，[伦辛克，R.A.，奥雷根，J.K.，&克拉克，J.J.（1997年）。看得见还是看不见：感知场景变化需要注意力。《心理科学》，8，368 - 373]）。这里报告的三个实验聚焦于检测背后的机制。更具体地说，我们探究了关于刺激材料的信息是否会在视觉记忆中积累，从而改善变化检测。为此，第一个实验改变了原始刺激版本和修改后刺激版本的重复次数。结果表明，重复次数越多，检测效果越好。第二个实验表明，当原始图片和修改后的图片都被重复时，重复表现提升得更多。最后，第三个实验通过展示当重复序列随机化时检测性能较差，强化了这些发现。总之，我们的研究结果表明信息在图片呈现过程中会在记忆中积累，而且当两种图片类型都被重复时性能会得到改善。这些结果强调了在变化检测中为两种图片版本都构建表征的重要性。
