Stimulus frequency influences spontaneous perceptual reversals in ambiguous apparent motion

The temporal integration of continuous sensory information into a temporally extended percept becomes evident in spontaneous reversals of ambiguous apparent motion. To study the temporal relation of spontaneous percept reversals and temporal stimulus properties, we systematically varied presentation...

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Bibliographic Details
Published inAttention, perception & psychophysics Vol. 70; no. 3; p. 437
Main Authors Ilg, Rüdiger, Burazanis, Stefan, Wohlschläger, Afra M, Wöller, Andreas, Wagenpfeil, Stefan, Mühlau, Mark
Format Journal Article
LanguageEnglish
Published Austin Springer Nature B.V 01.04.2008
Subjects
Attention
Brain
Cognitive Processes
Evidence
Frequencies
Influence
Manipulation
Motion
Observation
Stimuli
Visual Perception
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Summary:The temporal integration of continuous sensory information into a temporally extended percept becomes evident in spontaneous reversals of ambiguous apparent motion. To study the temporal relation of spontaneous percept reversals and temporal stimulus properties, we systematically varied presentation frequency in an ambiguous-apparent-motion paradigm. Moreover, we triggered percept reversals in a manner that was not consciously perceived by manipulating the duration of single frames. We found that the reversal rate depended on the stimulus frequency (with higher frequencies resulting in faster percept reversals) and that we could externally trigger perceptual reversals. Our findings support the idea that spontaneous reversals of ambiguous apparent motion are influenced by bottom-up effects at early processing levels. The paradigm allows for specific contrasts of spontaneous and externally triggered (but otherwise identical) perceptual reversals and, by this means, for further study of the underlying mechanisms. [PUBLICATION ABSTRACT]
ISSN:1943-3921
1943-393X