Temporal frequency limits of cross-modal and cross-attribute binding.

当一个物理事件发生时，该事件在大脑中通过视觉、听觉和触觉等不同的感觉通道分别进行处理。即使在一个单一的模态中，例如视觉，也有许多不同属性的通道，如亮度、颜色、形状和运动。我们的大脑必须整合来自不同感官通道的信号，以便对事件产生连贯的感知。最近我们发现，对于任何视觉、听觉和触觉属性的组合，交叉属性绑定的上限都惊人地相似（2-3 Hz）。在这项研究中，在人类心理物理实验中，我们进一步研究了模式和属性的组合如何影响基于同步的绑定的时间频率限制。除此之外，我们还研究了延迟视觉反馈下，延迟的多少会导致最大的损害，以及视觉是否也存在像听觉那样的临界间隔。

When a physical event occurs, the event is separately processed in the brain by different sensory channels such as vision, audition, and touch. Even within one single modality for example vision, there are many channels for different attributes such as luminance, color, shape, and motion. Our brain has to integrate the signals coming from different sensory channels in order to create a coherent perception of the event. Recently we found that the upper limits of cross-attribute binding were surprisingly similar for any combination of visual, auditory and tactile attributes (2-3 Hz). In this study, in human psychophysical experiments, we further examined how combinations of modalities and attributes affect the temporal frequency limit of synchrony-based binding. Besides this, we investigated what amount of delay brings about maximal impairment under delayed visual feedback and whether a critical interval, such as that in audition, also exists in vision.