Bischoff Matthias, Zentgraf Karen, Pilgramm Sebastian, Stark Rudolf, Krüger Britta, Munzert Jörn
Institute of Sport and Exercise Sciences, Department of Psychology and Sport and Exercise Sciences, University of Muenster, Horstmarer Landweg 62b, 48149 Münster, Germany; Bender Institute of Neuroimaging, University of Giessen, Otto-Behaghel-Straße 10 H, 35394 Giessen, Germany.
Institute for Sport Science, Department of Psychology and Sport Sciences, University of Giessen, Kugelberg 62, 35394 Giessen, Germany; Bender Institute of Neuroimaging, University of Giessen, Otto-Behaghel-Straße 10 H, 35394 Giessen, Germany.
Brain Cogn. 2014 Dec;92C:39-47. doi: 10.1016/j.bandc.2014.09.010. Epub 2014 Oct 29.
When table tennis players anticipate the course of the ball while preparing their motor responses, they not only observe their opponents striking the ball but also listen to events such as the sound of racket-ball contact. Because visual stimuli can be detected more easily when accompanied by a sound, we assumed that complementary sensory audiovisual information would influence the anticipation of biological motion, especially when the racket-ball contact is not presented visually, but has to be inferred from continuous movement kinematics and an abrupt sound. Twenty-six observers were examined with fMRI while watching point-light displays (PLDs) of an opposing table tennis player. Their task was to anticipate the resultant ball flight. The sound was presented complementary to the veracious event or at a deviant time point in its kinematics. Results showed that participants performed best in the complementary condition. Using a region-of-interest approach, fMRI data showed that complementary audiovisual stimulation elicited higher activation in the left temporo-occipital middle temporal gyrus (MTGto), the left primary motor cortex, and the right anterior intraparietal sulcus (aIPS). Both hemispheres also revealed higher activation in the ventral premotor cortex (vPMC) and the pars opercularis of the inferior frontal gyrus (BA 44). Ranking the behavioral effect of complementary versus conflicting audiovisual information over participants revealed an association between the complementary information and higher activation in the right vPMC. We conclude that the recruitment of movement representations in the auditory and visual modalities in the vPMC can be influenced by task-relevant cross-modal audiovisual interaction.
当乒乓球运动员在准备做出运动反应时预测球的轨迹时，他们不仅观察对手击球，还会留意诸如球拍与球接触的声音等事件。由于视觉刺激在伴有声音时更容易被检测到，我们假设互补的感官视听信息会影响对生物运动的预测，特别是当球拍与球的接触没有视觉呈现，而是必须从连续的运动运动学和突然的声音中推断出来时。26名观察者在观看对手乒乓球运动员的光点显示（PLD）时接受了功能磁共振成像（fMRI）检查。他们的任务是预测球的飞行结果。声音在真实事件的互补时刻或其运动学的偏差时间点呈现。结果表明，参与者在互补条件下表现最佳。使用感兴趣区域方法，fMRI数据显示，互补的视听刺激在左侧颞枕中颞回（MTGto）、左侧初级运动皮层和右侧顶内沟前部（aIPS）引发了更高的激活。两个半球在腹侧运动前皮层（vPMC）和额下回岛盖部（BA 44）也显示出更高的激活。对参与者的互补与冲突视听信息的行为效应进行排名，发现互补信息与右侧vPMC中更高的激活之间存在关联。我们得出结论，vPMC中听觉和视觉模态的运动表征的募集会受到与任务相关的跨模态视听交互的影响。
