Dunai J, Castiello U, Rossetti Y
Department of Psychology, The University of Melbourne, Australia.
Exp Brain Res. 2001 Jun;138(4):520-6. doi: 10.1007/s002210100740.
The aim of the present experiment was to investigate attentional processing of colour and location cues using a detection task. Subjects were required to respond to cued corners of a line drawing of a three-dimensional cube. Both cue and target were highlighted in red or green in one corner of the cube. Cues could be valid or invalid with respect to both the colour and location of subsequent targets. Results indicated a significant main effect of location validity, but no main effect of colour validity. Results also indicated that significant colour cueing effects were evident when location cues were invalid. These data also suggested different time courses for the processing of location and colour information. Location validity effects were largest at the shortest interstimulus interval (ISI) and decreased slightly with increasing ISI. In contrast, colour validity effects were absent at the shortest ISI, but thereafter increased with increasing ISI. The results of this experiment indicate that colour cues can be effective even in an inherently spatial task, provided there is sufficient time for the processing of colour information.
本实验的目的是使用一项检测任务来研究颜色和位置线索的注意加工。要求受试者对三维立方体线条图中被提示的角做出反应。线索和目标在立方体的一个角上用红色或绿色突出显示。线索对于后续目标的颜色和位置可能有效，也可能无效。结果表明位置有效性有显著的主效应，但颜色有效性没有主效应。结果还表明，当位置线索无效时，显著的颜色提示效应很明显。这些数据还表明位置和颜色信息加工的时间进程不同。位置有效性效应在最短刺激间隔（ISI）时最大，并随着ISI增加而略有下降。相比之下，颜色有效性效应在最短ISI时不存在，但此后随着ISI增加而增加。本实验结果表明，只要有足够的时间处理颜色信息，颜色线索即使在本质上是空间任务中也可能有效。
