Suzuki Yuta, Atmaca Sumeyya, Laeng Bruno
NTT Communication Science Laboratories, NTT Corporation, Kanagawa 243-0198, Japan.
Department of Psychology, University of Oslo, 0373 Oslo, Norway.
Brain Cogn. 2023 Mar;166:105956. doi: 10.1016/j.bandc.2023.105956. Epub 2023 Feb 1.
The flash-lag illusion (FLI) is a visual phenomenon where a flashed object, either co-localized or in physical alignment with another continuously moving object, is perceived to lag behind the path of the moving object. In the present study, we reveal an anisotropy of the FLI between the lateral visual fields that was expressed psychophysically as different points of subjective equality, depending on the hemifield in which the stimuli appeared. Specifically, the study confirmed that, as seen in two previous studies, the FLI was significantly larger in the left visual field (LVF) than in the right (RVF). In addition, pupil dilations were larger in the RVF than in the LVF as well as returning to baseline levels more rapidly in the LVF. We interpret these findings as converging on revealing more efficient spatial and attentional processing and, in turn, extrapolation of motion in the LVF/right hemisphere than in the RVF/left hemisphere.
闪光滞后错觉（FLI）是一种视觉现象，即一个闪现的物体，无论是与另一个连续移动的物体共定位还是在物理上对齐，都会被感知为落后于移动物体的路径。在本研究中，我们揭示了外侧视野之间FLI的各向异性，这在心理物理学上表现为不同的主观相等点，具体取决于刺激出现的半视野。具体而言，该研究证实，如前两项研究所示，左视野（LVF）中的FLI明显大于右视野（RVF）。此外，右视野中的瞳孔扩张大于左视野，并且左视野中瞳孔扩张更快地恢复到基线水平。我们将这些发现解释为共同揭示了左视野/右半球比右视野/左半球更有效的空间和注意力处理，以及运动外推。
