Karabay Aytaç, Akyürek Elkan G
University of Groningen, the Netherlands.
University of Groningen, the Netherlands.
Acta Psychol (Amst). 2019 May;196:56-69. doi: 10.1016/j.actpsy.2019.04.002. Epub 2019 Apr 16.
Performance in a dual target rapid serial visual presentation task was investigated, dependent on whether the color or the contrast of the targets was the same or different. Both identification accuracy on the second target, as a measure of temporal attention, and the frequency of temporal integration were measured. When targets had a different color (red or blue), overall identification accuracy of the second target and identification accuracy of the second target at Lag 1 were both higher than when targets had the same color. At the same time, increased temporal integration of the targets at Lag 1 was observed in the different color condition, even though actual (non-integrated) single targets never consisted of multiple colors. When the color pairs were made more similar, so that they all fell within the range of a single nominal hue (blue), these effects were not observed. Different findings were obtained when contrast was manipulated. Identification accuracy of the second target was higher in the same contrast condition than in the different contrast condition. Higher identification accuracy of both targets was furthermore observed when they were presented with high contrast, while target contrast did not influence temporal integration at all. Temporal attention and integration were thus influenced differently by target contrast pairing than by (categorical) color pairing. Categorically different color pairs, or more generally, categorical feature pairs, may thus afford a reduction in temporal competition between successive targets that eventually enhances attention and integration.
研究了在双目标快速序列视觉呈现任务中的表现，该表现取决于目标的颜色或对比度是相同还是不同。测量了作为时间注意力指标的第二个目标的识别准确率以及时间整合频率。当目标颜色不同（红色或蓝色）时，第二个目标的总体识别准确率和滞后1时第二个目标的识别准确率均高于目标颜色相同时的情况。同时，在颜色不同的条件下，观察到滞后1时目标的时间整合增加，尽管实际（未整合）的单个目标从未由多种颜色组成。当颜色对变得更加相似，以至于它们都落在单一标称色调（蓝色）范围内时，未观察到这些效应。当操纵对比度时，得到了不同的结果。在相同对比度条件下，第二个目标的识别准确率高于不同对比度条件下的情况。此外，当目标以高对比度呈现时，两个目标的识别准确率都更高，而目标对比度根本不影响时间整合。因此，目标对比度配对对时间注意力和整合的影响与（分类）颜色配对不同。因此，分类上不同的颜色对，或者更一般地说，分类特征对，可能会减少连续目标之间的时间竞争，最终增强注意力和整合。
