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Combining Local and Global Cues to Motion

Morgan, M. J. (2017). Combining Local and Global Cues to Motion. Attention, Perception and Psychophysics, 79(7), pp. 1886-1891. doi: 10.3758/s13414-017-1374-x


A spinning, moving object such as a football with a surface texture combines motion signals from rotation and translation. The interaction between these two kinds of signal was studied psychophysically with moving, circular clouds of dots, which could also move within the cloud. If the cloud moved near-vertically downwards but the dots within it moved obliquely, the apparent path of the cloud was attracted to that of the dots, as previously demonstrated with moving Gabor patches (Tse & Hseih, 2006; Lisi & Cavanagh, 2015). This attractive effect was enhanced in parafoveal viewing and by not presenting a frame around the dots. A larger effect in the opposite direction (repulsion) was found for the perceived direction of the dots when they moved near-vertically and the cloud containing them moved obliquely These results are discussed in relation to Gestalt principles of perceived relative motion, and more recent Bayes-inspired accounts of the interaction between local and global motion.

Publication Type: Article
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RE Ophthalmology
Departments: School of Health & Psychological Sciences > Optometry & Visual Sciences
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