Rapid image-segmentation and perceptual transparency share a process which utilises X-junctions generated by temporal integration in the visual system |
| |
Authors: | Mitsudo Hiroyuki |
| |
Institution: | Department of Psychology, Faculty of Letters, Kyushu University, 6-19-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan. mitsudo@psycho.hes.kyushu-u.ac.jp |
| |
Abstract: | Perceptual transparency requires local same-polarity X-junctions, which can also be generated by temporal integration under natural dynamic conditions. In this study, segmentation performance and target appearance were measured for a uniform gray target embedded in a random-dot frame presented with a temporally adjacent mask. Although static cues for both segmentation and transparency were unavailable, transparency was observed only when collinear same-polarity edges reduced backward masking, in both the fovea and the perifovea. These results suggest that the visual system has a common underlying mechanism for rapid segmentation and transparency, which utilises same-polarity X-junctions generated by temporal integration. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|