| Stimulus frequency influences spontaneous perceptual reversals in ambiguous apparent motion. | |
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MedLine Citation:
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PMID: 18459254 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Rüdiger Ilg; Stefan Burazanis; Afra M Wohlschläger; Andreas Wölleir; Stefan Wagenpfeil; Mark Mühlau |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Perception & psychophysics Volume: 70 ISSN: 0031-5117 ISO Abbreviation: Percept Psychophys Publication Date: 2008 Apr |
Date Detail:
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Created Date: 2008-05-07 Completed Date: 2008-06-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0200445 Medline TA: Percept Psychophys Country: United States |
Other Details:
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Languages: eng Pagination: 437-42 Citation Subset: IM |
Affiliation:
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Department of Neurology, Klinikum Rechts der Isar, Technische Universität München, München, Germany. ilg@neuro.med.tum.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Female Humans Male Motion Perception* Time Factors Visual Perception* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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