Contrast configuration influences grouping in apparent motion

Anna Ma-Wyatt*, Colin W G Clifford, Peter Wenderoth

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Citations (Scopus)


We investigated whether the same principles that influence grouping in static displays also influence grouping in apparent motion. Using the Ternus display, we found that the proportion of group motion reports was influenced by changes in contrast configuration. Subjects made judgments of completion of these same configurations in a static display. Generally, contrast configurations that induced a high proportion of group motion responses were judged as more 'complete' in static displays. Using a stereo display, we then tested whether stereo information and T-junction information were critical for this increase in group motion. Perceived grouping was consistently higher for same contrast polarity configurations than for opposite contrast polarity configurations, regardless of the presence of stereo information or explicit T-junctions. Thus, while grouping in static and moving displays showed a similar dependence on contrast configuration, motion grouping showed little dependence on stereo or T-junction information.

Original languageEnglish
Pages (from-to)669-685
Number of pages17
Issue number6
Publication statusPublished - 2005

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    Ma-Wyatt, A., Clifford, C. W. G., & Wenderoth, P. (2005). Contrast configuration influences grouping in apparent motion. Perception, 34(6), 669-685.