Document Detail

Does the redundant signal effect occur at an early visual stage?
MedLine Citation:
PMID:  17989971     Owner:  NLM     Status:  MEDLINE    
To try and cast light on the processing locus of the redundant signal effect (RSE), i.e. the speeding of reaction time (RT) with two rather than one stimulus, we manipulated three features of redundant visual stimuli, i.e. exposure duration, intensity and interstimulus interval (ISI). We found an inverse relationship between stimulus duration or intensity and the maximum length of ISI at which an RSE occurred. These effects are broadly similar to those found in the measurement of visible persistence, i.e. the phenomenon that the sensation produced by a brief visual stimulus can outlast the duration of the physical stimulation. Therefore, we suggest that the RSE occurs at a visual processing stage. This conclusion does not rule out other subsequent stages when employing different redundant stimuli and task paradigms.
Silvia Savazzi; Carlo A Marzi
Publication Detail:
Type:  Journal Article     Date:  2007-11-08
Journal Detail:
Title:  Experimental brain research     Volume:  184     ISSN:  1432-1106     ISO Abbreviation:  Exp Brain Res     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2007-11-16     Completed Date:  2008-05-14     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  275-81     Citation Subset:  IM    
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MeSH Terms
Acoustic Stimulation
Geniculate Bodies / physiology
Neuropsychological Tests
Photic Stimulation
Psychomotor Performance / physiology*
Reaction Time / physiology*
Retina / physiology
Time Factors
Time Perception / physiology*
Unconscious (Psychology)
Visual Cortex / physiology
Visual Fields / physiology
Visual Pathways / physiology
Visual Perception / physiology*

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

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