Contrast configuration influences grouping in apparent motion.

Abstract:

: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.

journal_name

Perception

journal_title

Perception

authors

Ma-Wyatt A,Clifford CW,Wenderoth P

doi

10.1068/p3444

keywords:

subject

Has Abstract

pub_date

2005-01-01 00:00:00

pages

669-85

issue

6

eissn

0301-0066

issn

1468-4233

journal_volume

34

pub_type

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