pp. 1723-1752
S&M4014 Research Paper of Special Issue https://doi.org/10.18494/SAM5467 Published: April 30, 2025 Investigation of Motion Illusions in Continuous Line Graphics on Geometric Forms through Eye-movement Analysis [PDF] Chih-Chao Chang, Guang-Dah Chen, and Chao-Ming Wang (Received November 11, 2024; Accepted April 15, 2025) Keywords: visual perception, motion illusions, eye tracking, scan path, saccade amplitude
The study of motion illusions is a significant area of psychology and visual perception. Most motion illusions investigated so far are perceived from static objects. However, many objects exhibiting illusory motions are dynamic, which necessitates further investigation. In this study, the aim is to investigate the visual tracking of motion illusions generated by continuous line graphics on dynamically rotated geometric forms, using precise eye-movement data obtained through an eye-tracking system. Three types of motion illusion—apparent motion, induced motion, and motion aftereffect—are created by rotating seven different types of prism, including six polygonal shapes and one cylindrical shape. Properties of the eye-movement data, such as saccade amplitude, fixation count, and scan path, were analyzed by a psychophysical approach. The results reveal that the three types of motion illusion appear in a specific order as a prism is rotated from slow to fast. Among these illusions, apparent motion results in the largest average saccade amplitudes, and among the seven types of prism, the triangular prism induces the smallest average saccade amplitude. Additionally, the triangular prism is associated with the fewest number of fixations. These findings contribute to a deeper understanding of motion illusions, emphasizing their potential applications in eye-tracking research in daily contexts and offering valuable insights for future studies in visual perception.
Corresponding author: Chao-Ming Wang![]() ![]() This work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Chih-Chao Chang, Guang-Dah Chen, and Chao-Ming Wang , Investigation of Motion Illusions in Continuous Line Graphics on Geometric Forms through Eye-movement Analysis , Sens. Mater., Vol. 37, No. 4, 2025, p. 1723-1752. |