Synchrony Does Not Promote Grouping in Temporally Structured Displays,
Farid and Adelson
QuickTime movies of our dynamic dot stimulus. (a) the 180
degrees straight condition; (b) the 120 degrees zig-zag
condition; (c) the 90 degrees random-walk condition. The
perception of form is visible only in condition (a) which is the only
condition that contains a temporal contrast cue. The motion reversals
in all three conditions are synchronized.