Document Detail

Duration illusions in a train of visual stimuli.
MedLine Citation:
PMID:  8577576     Owner:  NLM     Status:  MEDLINE    
The first stimulus in a sequential train of identical flashes of light appears to last longer than those in the middle of the train. Four flashes (each 600 or 667 ms) were presented and the first was shortened until it appeared to have the same duration as that of the next. The duration of the first stimulus was found to be overestimated by about 50%. The illusion was unaffected by stimulus contrast, size, or interflash interval (between 100 and 600 ms). For some subjects, the last stimulus in the train also appeared to be about 50% longer than the penultimate flash. The results are discussed in terms of theories of how attention, arousal, and stimulus processing can affect duration perception. The mechanisms activated are peculiar to the visual system, since no similar illusion of duration was consistently experienced with a train of auditory tones.
D Rose; J Summers
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Perception     Volume:  24     ISSN:  0301-0066     ISO Abbreviation:  Perception     Publication Date:  1995  
Date Detail:
Created Date:  1996-03-13     Completed Date:  1996-03-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0372307     Medline TA:  Perception     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1177-87     Citation Subset:  IM    
Department of Psychology, University of Surrey, Guildford, UK.
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MeSH Terms
Optical Illusions*
Visual Perception*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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