Document Detail

Separation of the systems for color and spatial manipulation in working memory revealed by a dual-task procedure.
MedLine Citation:
PMID:  15811245     Owner:  NLM     Status:  MEDLINE    
The manipulation of different kinds of content is fundamental to working memory. It has been suggested that the mere maintenance of color and spatial information occurs in parallel, but little is known about whether this holds true for manipulation as well. Using a dual-task delayed-response paradigm that required the manipulation of color and angles, this study finds that the two functions do not interfere. Conversely, interference did occur when both components of a dual-task tapped into the spatial system. Thus, color and spatial information are manipulated in parallel. A concurrent phonological task did not interfere with either maintenance or manipulation, whereas a task requiring central executive processes interfered with manipulation only. We speculate that the ventral-dorsal dissociation of visual processing is conserved for manipulation processes and that manipulation differs from maintenance in the extent to which is relies on central executive resources.
Harald M Mohr; David E J Linden
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of cognitive neuroscience     Volume:  17     ISSN:  0898-929X     ISO Abbreviation:  J Cogn Neurosci     Publication Date:  2005 Feb 
Date Detail:
Created Date:  2005-04-06     Completed Date:  2005-05-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8910747     Medline TA:  J Cogn Neurosci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  355-66     Citation Subset:  IM    
Johann Wolfgang Goethe-Universität, Germany.
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MeSH Terms
Attention / physiology*
Color Perception / physiology*
Discrimination (Psychology) / physiology
Memory, Short-Term / physiology*
Photic Stimulation / methods
Psychomotor Performance / physiology
Reaction Time / physiology
Space Perception / physiology*
Systems Theory

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