Document Detail

Perceived duration of expected and unexpected stimuli.
MedLine Citation:
PMID:  15609031     Owner:  NLM     Status:  MEDLINE    
Three experiments assessed whether perceived stimulus duration depends on whether participants process an expected or an unexpected visual stimulus. Participants compared the duration of a constant standard stimulus with a variable comparison stimulus. Changes in expectancy were induced by presenting one type of comparison more frequently than another type. Experiment 1 used standard durations of 100 and 400 ms, and Experiments 2 and 3 durations of 400 and 800 ms. Stimulus frequency did not affect perceived duration in Experiment 1. In Experiments 2 and 3, however, frequent comparisons were perceived as shorter than infrequent ones, and discrimination performance was better for infrequent comparisons. Overall, this study supports the notion that infrequent stimuli increase the speed of an internal pacemaker.
Rolf Ulrich; Judith Nitschke; Thomas Rammsayer
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2004-12-18
Journal Detail:
Title:  Psychological research     Volume:  70     ISSN:  0340-0727     ISO Abbreviation:  Psychol Res     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-05-16     Completed Date:  2006-08-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0435062     Medline TA:  Psychol Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  77-87     Citation Subset:  IM    
Psychologisches Institut, Universität Tübingen, Friedrichstrasse 21, 72072, Tübingen, Germany.
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MeSH Terms
Attention / physiology*
Color Perception / physiology*
Time Factors
Time Perception / physiology*
Visual Perception / physiology*

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