Corral Maria-Jose, Escera Carles
Cognitive Neuroscience Research Group, Department of Psychiatry and Clinical Psychobiology, University of Barcelona, Catalonia, Spain.
Neuroreport. 2008 Oct 8;19(15):1535-9. doi: 10.1097/WNR.0b013e3283110416.
Novel sounds embedded in a repetitive stream of auditory stimuli impair performance of the visual task at hand. Parmentier et al. suggested that this distraction effect might be because of the shifting cost of moving attention from the task-irrelevant (auditory) to the task-relevant (visual) channel, or from their shifting of spatial locations. Here, the source location of the sounds in an audio-visual distraction paradigm was varied systematically (headphones and 0, -18, -72, 18, and 72 degrees), and the results revealed significant distracting effects of novel sounds occurring in the headphone and the right location conditions. This supports the assumption that in the behavioral cost observed in the audio-visual distraction paradigm a spatial shift of attention is involved.
嵌入在重复听觉刺激流中的新颖声音会损害手头视觉任务的表现。帕尔芒蒂埃等人认为，这种干扰效应可能是由于将注意力从与任务无关的（听觉）通道转移到与任务相关的（视觉）通道的转移成本，或者是由于它们空间位置的转移。在这里，在视听干扰范式中声音的源位置被系统地改变（耳机以及0度、-18度、-72度、18度和72度），结果显示在耳机和右侧位置条件下出现的新颖声音具有显著的干扰效应。这支持了这样一种假设，即在视听干扰范式中观察到的行为成本涉及注意力的空间转移。
