Document Detail


Manipulations of the relationship between response alternatives and exogenous saccade latencies.
MedLine Citation:
PMID:  21877103     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The relationship between the latencies of saccadic eye movements and the number of response alternatives is complex. Previously, we have found a decrease in exogenous saccade latencies with an increase in the number of response alternatives (i.e., an anti-Hick's effect). In the present study, we examined the effect of bottom up and top down influences on the effect. In Experiment 1, we found that the anti-Hick's effect is dependent upon the number, as opposed to the configuration, of response alternatives, suggesting that the effect is not a purely bottom up phenomenon. In Experiment 2, we examined whether top down processes, such as expectancy, influence the magnitude and/or direction of the relationship between response alternatives and reaction time. We found that interleaving, as opposed to blocking, the number of alternatives negated the anti-Hick's effect. Taken together, these results suggest that the anti-Hick's effect arises not only from stimulus-based perceptual signals but also from higher-order control signals.
Authors:
Bonnie M Lawrence; Joseph S Weaver
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2011-08-30
Journal Detail:
Title:  Experimental brain research     Volume:  214     ISSN:  1432-1106     ISO Abbreviation:  Exp Brain Res     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-09-16     Completed Date:  2012-06-26     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  241-7     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Humans
Photic Stimulation / methods*
Psychomotor Performance / physiology*
Reaction Time / physiology*
Saccades / physiology*
Time Factors
Young Adult

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


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