Visser T A, Enns J T
Department of Psychology, University of British Columbia, 2136 West Mail, Vancouver, BC V6T 1Z4, Canada.
Perception. 2001;30(2):135-45. doi: 10.1068/p3089.
When two visual patterns are presented in rapid succession, their contours may be combined into a single unified percept. This temporal integration is known to be influenced by such low-level visual factors as stimulus intensity, contour proximity, and stimulus duration. In this study we asked whether temporal integration is modulated by an attentional-blink procedure. The results from a localisation task in experiment 1 and a detection task in experiment 2 pointed to two separate effects. First, greater attentional availability increased the accuracy of spatial localisation. Second, it increased the duration over which successive stimuli could be integrated. These results imply that theories of visible persistence and visual masking must account for attentional influences in addition to lower-level effects. They also have practical implications for use of the temporal-integration task in the assessment of group and individual differences.
当两个视觉模式快速连续呈现时，它们的轮廓可能会组合成一个单一的统一感知。已知这种时间整合会受到诸如刺激强度、轮廓接近度和刺激持续时间等低层次视觉因素的影响。在本研究中，我们探讨了时间整合是否会受到注意瞬脱程序的调节。实验1中的定位任务和实验2中的检测任务结果指向了两种不同的效应。首先，更高的注意可用性提高了空间定位的准确性。其次，它增加了连续刺激能够被整合的持续时间。这些结果表明，可见持续性和视觉掩蔽理论除了要考虑低层次效应外，还必须考虑注意的影响。它们对于在评估群体和个体差异中使用时间整合任务也具有实际意义。
