Beer Anton L, Röder Brigitte
Department of Psychology, Philipps-University Marburg, Gutenbergstr. 18, 35032 Marburg, Hessen, Germany.
Brain Res Cogn Brain Res. 2004 Jan;18(2):205-25. doi: 10.1016/j.cogbrainres.2003.10.004.
The present event-related potential (ERP) study investigated whether attending to a particular direction of motion similarly enhances the processing of auditory and visual stimuli. ERPs were recorded while participants perceived horizontally moving visual and auditory stimuli. Attention was manipulated by asking participants to detect an infrequent target stimulus that was of a specified modality (either visual or auditory) and that moved in a specified direction (either leftward or rightward). Stimuli moving in the attended direction elicited ERPs that were more negative than ERPs to stimuli moving in the unattended direction. This difference started around 140 ms post stimulus onset for visual and around 120 ms for auditory stimuli. The auditory effect had a frontal scalp topography, whereas the visual effect was distributed parieto-occipitally. Later parts of the difference waves were maximal at centro-parietal electrodes for both modalities. Crossmodal effects of attention to motion from one modality to the other could not be detected. The results are discussed with regard to hierarchical models of attention.
当前的事件相关电位（ERP）研究调查了关注特定运动方向是否同样会增强对听觉和视觉刺激的处理。在参与者感知水平移动的视觉和听觉刺激时记录ERP。通过要求参与者检测不常见的目标刺激来操纵注意力，该目标刺激具有特定的模态（视觉或听觉）且沿特定方向（向左或向右）移动。朝着被关注方向移动的刺激所引发的ERP比朝着未被关注方向移动的刺激所引发的ERP更负。这种差异在视觉刺激开始后约140毫秒出现，在听觉刺激开始后约120毫秒出现。听觉效应在头皮前部呈现特定分布，而视觉效应则分布在顶枕部。差异波的后期部分在两种模态的中央顶叶电极处达到最大值。未检测到从一种模态到另一种模态的跨模态运动注意效应。将结合注意力的层次模型对结果进行讨论。
