Document Detail


Dual-task interference in visual working memory: a limitation in storage capacity but not in encoding or retrieval.
MedLine Citation:
PMID:  19933566     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The concurrent maintenance of two visual working memory (VWM) arrays can lead to profound interference. It is unclear, however, whether these costs arise from limitations in VWM storage capacity (Fougnie & Marois, 2006) or from interference between the storage of one visual array and encoding or retrieval of another visual array (Cowan & Morey, 2007). Here, we show that encoding a VWM array does not interfere with maintenance of another VWM array unless the two displays exceed maintenance capacity (Experiments 1 and 2). Moreover, manipulating the extent to which encoding and maintenance can interfere with one another had no discernable effect on dual-task performance (Experiment 2). Finally, maintenance of a VWM array was not affected by retrieval of information from another VWM array (Experiment 3). Taken together, these findings demonstrate that dual-task interference between two concurrent VWM tasks is due to a capacity-limited store that is independent from encoding and retrieval processes.
Authors:
Daryl Fougnie; René Marois
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Attention, perception & psychophysics     Volume:  71     ISSN:  1943-393X     ISO Abbreviation:  Atten Percept Psychophys     Publication Date:  2009 Nov 
Date Detail:
Created Date:  2009-11-25     Completed Date:  2010-02-01     Revised Date:  2013-05-31    
Medline Journal Info:
Nlm Unique ID:  101495384     Medline TA:  Atten Percept Psychophys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1831-41     Citation Subset:  IM    
Affiliation:
Department of Psychology, Vanderbilt University, 627 Wilson Hall, 111 21st Ave S., Nashville, TN 37203, USA. d.fougnie@vanderbilt.edu
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MeSH Terms
Descriptor/Qualifier:
Attention*
Choice Behavior
Color Perception*
Conflict (Psychology)
Cues
Discrimination (Psychology)*
Female
Humans
Male
Memory, Short-Term*
Orientation*
Pattern Recognition, Visual*
Psychophysics
Reaction Time
Retention (Psychology)
Young Adult
Grant Support
ID/Acronym/Agency:
R01 MH070776-01/MH/NIMH NIH HHS; R01 MH070776-02/MH/NIMH NIH HHS; R01 MH070776-03/MH/NIMH NIH HHS; R01 MH070776-04/MH/NIMH NIH HHS; R01 MH070776-05/MH/NIMH NIH HHS; R01-MH70776/MH/NIMH NIH HHS
Comments/Corrections

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