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Updated: May 7, 2026

Bouncing Ball with a Uniformly Varying Velocity in a Metronome Synchronization Task
Published on: September 21, 2017
A unique visual rhythm does not pop out
Hui Li1, Yan Bao, Ernst Pöppel
1Institute of Medical Psychology and Human Science Center, Ludwig Maximilian University, Munich, Germany.
Abstract:
We investigated attentional demands in visual rhythm perception of periodically moving stimuli using a visual search paradigm. A dynamic search display consisted of vertically "bouncing dots" with regular rhythms. The search target was defined by a unique visual rhythm (i.e., a shorter or longer period) among rhythmic distractors with identical periods. We found that search efficiency for a faster or a slower periodically moving target decreased as the number of distractors increased, although searching for a faster target was about one second faster than searching for a slower target. We conclude that perception of a visual rhythm defined by a unique period is not a "pop-out" process, but a serial one that demands considerable attention.
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