Graduate School of Science and Engineering, Chiba University, Inage-ku, Chiba-shi, Chiba, Japan.
Digital Contents Research Department, Institute of Sport Science, ASICS Corporation, Nishi-ku, Kobe, Japan.
J Vis. 2024 Oct 3;24(11):10. doi: 10.1167/jov.24.11.10.
Onset rivalry can be modulated by a preceding stimulus with features similar to rivalrous test stimuli. In this study, we used this modulating effect to investigate the integration of color and orientation during onset rivalry using equiluminant chromatic gratings. Specifically, we explored whether this modulating effect leads to a decoupling of color and orientation in chromatic gratings, resulting in a percept distinct from either of the rivalrous gratings. The results demonstrated that color-binding errors can be observed in a form where rivalrous green-gray clockwise and red-gray counterclockwise gratings yield the percept of a bichromatic, red-green grating with either clockwise or counterclockwise orientation. These errors were observed under a brief test duration (30 ms), with both monocular and binocular presentations of the preceding stimulus. The specific color and orientation combination of the preceding stimulus was not critical for inducing color-binding errors, provided it was composed of the test color and orientation. We also found a notable covariant relationship between the perception of color-binding errors and exclusive dominance, where the perceived orientation in color-binding errors generally matched that in exclusive dominance. This finding suggests that the mechanisms underlying color-binding errors may be related to, or partially overlap with, those determining exclusive dominance. These errors can be explained by the decoupling of color and orientation in the representation of the suppressed grating, with the color binding to the dominant grating, resulting in an erroneously perceived bichromatic grating.
启动竞争可以被具有类似竞争测试刺激特征的前导刺激所调制。在这项研究中，我们利用这种调制效应，使用等亮度的彩色光栅来研究启动竞争期间颜色和方向的整合。具体来说，我们探讨了这种调制效应是否会导致彩色光栅中颜色和方向的解耦，从而产生一种不同于竞争光栅的感知。结果表明，在竞争的绿色-灰色顺时针和红色-灰色逆时针光栅产生具有顺时针或逆时针方向的双色、红-绿光栅的感知中，可以观察到颜色绑定错误。这些错误是在短暂的测试持续时间（30 毫秒）下观察到的，无论是单眼还是双眼呈现前导刺激。前导刺激的特定颜色和方向组合对于诱导颜色绑定错误并不是关键的，只要它由测试颜色和方向组成。我们还发现颜色绑定错误的感知与独占优势之间存在显著的协变关系，其中颜色绑定错误中的感知方向通常与独占优势中的感知方向相匹配。这一发现表明，颜色绑定错误的机制可能与决定独占优势的机制有关，或者部分重叠。这些错误可以通过抑制光栅的表示中颜色和方向的解耦来解释，其中颜色与主导光栅绑定，导致错误地感知双色光栅。
