It's all relative? The influence of stimulus configurations on motion perception
Wed-Main hall - Z2b-Poster 3-8907
Presented by: Simon Merz
When asked to localize the onset or offset location of a dynamic moving object, systematic biases in, as well as against the direction of motion have been systematically observed (Fröhlich effect, Onset-repulsion effect, Representational Momentum effect, Offset-repulsion effect). Recent evidences (Merz et al., 2022) suggests a systematic change of these biases with changes in stimulus speeds, as well as a close, mirroring relationship between the course of change for perceived onset and offset. With the goal of replicating this basic finding, several experiments with different stimulus configurations were designed to investigate whether this pattern of results can be generalized to different stimulus configuration (different stimulus size; radius of circular motion trajectory; target presentation), and to analyze the importance of absolute and relative stimulus speed for this data pattern. Overall, the results indicate a robust data pattern across different stimulus configuration, and the results are discussed on the background of the recently introduced Speed Prior account of motion perception.
Keywords: motion perception; stimulus configuration; representational momentum; Fröhlich effect; Onset & Offset repulsion, localization