Document Detail

The effective time course of preparation.
MedLine Citation:
PMID:  18255052     Owner:  NLM     Status:  MEDLINE    
In reaction time (RT) research on nonspecific preparation, the preparation period is often identified with the foreperiod (FP), the interval between the offset of a neutral warning stimulus (S1) and the onset of the reaction stimulus (S2). However, the "effective preparation period" may be longer than FP: nonspecific preparation may start prior to FP (e.g., at the onset of S1) and/or continue after it (i.e., in parallel with the reaction process). In four experiments, we factorially varied FP and an additional factor (S1-duration; S2-luminance; stimulus-response compatibility) that probed the effective preparation period outside the bounds of FP. By examining how equivalent RT-FP functions obtain at the different levels of the additional factor, we showed that nonspecific preparation (1) starts at the onset of S1 for brief FPs but at its offset for longer FPs and (2) continues in parallel with S2-encoding but stops prior to response selection.
Sander A Los; Marcus L J Schut
Publication Detail:
Type:  Journal Article     Date:  2008-02-05
Journal Detail:
Title:  Cognitive psychology     Volume:  57     ISSN:  1095-5623     ISO Abbreviation:  Cogn Psychol     Publication Date:  2008 Aug 
Date Detail:
Created Date:  2008-06-24     Completed Date:  2008-10-17     Revised Date:  2009-01-16    
Medline Journal Info:
Nlm Unique ID:  0241111     Medline TA:  Cogn Psychol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  20-55     Citation Subset:  IM    
Department of Cognitive Psychology, Vrije Universiteit, Van der Boechorststraat 1, 1081 BT Amsterdam, The Netherlands.
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MeSH Terms
Pattern Recognition, Visual*
Psychomotor Performance*
Reaction Time*
Set (Psychology)*
Time Factors

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