Document Detail

Reaction time measures of backward masking.
MedLine Citation:
PMID:  3385415     Owner:  NLM     Status:  MEDLINE    
We employed both simple and choice reaction time (RT) paradigms in which the subjects were required to respond to 3.0 cycles per degree (c/d) square-wave gratings presented to one eye, while checkerboard masks were presented at various stimulus-onset asynchronies to the other eye. No masking was evident using the simple RT paradigm, but with the choice RT task, checkerboard masks presented to the contralateral eye of three subjects resulted in substantial decreases in response speed when the test preceded the mask by stimulus-onset asynchronies of 25 to 75 ms. Masks that contained lower fundamental spatial frequencies (1.0 c/d) than the target were more effective than masks containing fundamental spatial frequencies (6.0 c/d) higher than the target, while masks that contained fundamental components identical to those in the target (3.0 c/d) produced maximum masking. The results offer support for the sustained-transient theory of visual processing and validate RT as a technique for examining spatio-temporal factors in masking.
J G May; S W Grannis; W P Dunlap
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of general psychology     Volume:  115     ISSN:  0022-1309     ISO Abbreviation:  J Gen Psychol     Publication Date:  1988 Apr 
Date Detail:
Created Date:  1988-07-29     Completed Date:  1988-07-29     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  2985111R     Medline TA:  J Gen Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  171-85     Citation Subset:  IM    
Department of Psychology, University of New Orleans.
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MeSH Terms
Choice Behavior
Perceptual Masking*
Reaction Time*
Space Perception
Time Factors
Visual Perception*

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