Department of Psychology, Rikkyo University, Niiza-shi, Saitama, Japan.
PLoS One. 2011 Mar 9;6(3):e17499. doi: 10.1371/journal.pone.0017499.
Vision provides the most salient information with regard to the stimulus motion. However, it has recently been demonstrated that static visual stimuli are perceived as moving laterally by alternating left-right sound sources. The underlying mechanism of this phenomenon remains unclear; it has not yet been determined whether auditory motion signals, rather than auditory positional signals, can directly contribute to visual motion perception.
METHODOLOGY/PRINCIPAL FINDINGS: Static visual flashes were presented at retinal locations outside the fovea together with a lateral auditory motion provided by a virtual stereo noise source smoothly shifting in the horizontal plane. The flash appeared to move by means of the auditory motion when the spatiotemporal position of the flashes was in the middle of the auditory motion trajectory. Furthermore, the lateral auditory motion altered visual motion perception in a global motion display where different localized motion signals of multiple visual stimuli were combined to produce a coherent visual motion perception.
CONCLUSIONS/SIGNIFICANCE: These findings suggest there exist direct interactions between auditory and visual motion signals, and that there might be common neural substrates for auditory and visual motion processing.
视觉提供了与刺激运动最相关的信息。然而，最近的研究表明，通过交替使用左右声源，静态视觉刺激会被感知为横向运动。这种现象的潜在机制尚不清楚；尚未确定听觉运动信号是否可以直接有助于视觉运动感知，而不是听觉位置信号。
方法/主要发现：在视网膜黄斑区以外的位置呈现静态视觉闪光，并与在水平面上平滑移动的虚拟立体声噪声源提供的横向听觉运动相结合。当闪光的时空位置处于听觉运动轨迹的中间时，闪光通过听觉运动而移动。此外，当多个视觉刺激的不同局部运动信号组合在一起产生连贯的视觉运动感知时，横向听觉运动改变了整体运动显示中的视觉运动感知。
结论/意义：这些发现表明听觉和视觉运动信号之间存在直接的相互作用，并且听觉和视觉运动处理可能存在共同的神经基础。
