Separate temporal limits of cross-attribute processing revealed by binding and synchrony judgments

本研究比较了视听(AV)、视触觉(VT)和听触觉(AT)组合之间的同步-异步辨别阈值和时间绑定上限。结果表明，AV和VT(约4 Hz)的同步性知觉的时间分辨率相似，但AT(约10 Hz)的同步性知觉的时间分辨率显著高于AT(P<0.05)。然而，对于视觉、听觉和触觉属性的任何组合(约2.5赫兹)，跨属性时间绑定的上限惊人地相似。这些发现表明，跨属性时间捆绑是由一个缓慢的中央过程调节的，该过程结合了单独处理的单个事件的“什么”和“何时”属性。

This study compared synchrony-asynchrony discrimination thresholds and the upper limits of temporal binding between audio-visual (AV), visuo-tactile (VT), and audio-tactile (AT) combinations. The results show that the temporal resolution of synchrony perception was similar for AV and VT (approximately 4 Hz), but significantly higher for AT (approximately 10 Hz). However, the upper limits of cross-attribute temporal binding were surprisingly similar for any combination of visual, auditory and tactile attributes (approximately 2.5 Hz). These findings suggest that cross-attribute temporal binding is mediated by a slow central process that combines separately processed 'what' and 'when' properties of a single event.