Document Detail

Reaction time and visual brightness: within-subject correlations.
MedLine Citation:
PMID:  450604     Owner:  NLM     Status:  MEDLINE    
An experiment was conducted to compare visual reaction time and visual brightness within the same subjects. Simple reaction times and magnitude estimates of brightness were obtained in response to 1000-msec. flashes of 60.7, 67.5, 76.4, 85.1, and 93.4 dB re 10(-10)L white light. The relationship between reaction time and stimulus intensity was best described by a negative logarithmic function, while the relationship between magnitude estimates of brightness and stimulus intensity was best described by a power function. Linear correlations between reaction times and magnitude estimates indicated that visual reaction time and brightness are not proportional within all subjects. Previous reports of proportionality between these two measures were discussed as possibly being the result of inappropriate cross-experiment comparisons.
A V Cardello
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Perceptual and motor skills     Volume:  48     ISSN:  0031-5125     ISO Abbreviation:  Percept Mot Skills     Publication Date:  1979 Feb 
Date Detail:
Created Date:  1979-08-16     Completed Date:  1979-08-16     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0401131     Medline TA:  Percept Mot Skills     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  107-15     Citation Subset:  IM    
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MeSH Terms
Photic Stimulation / methods
Reaction Time*
Visual Perception*

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

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