Document Detail


Continuous visual properties explain neural responses to nonsymbolic number.
MedLine Citation:
PMID:  23046492     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Nonsymbolic number and its continuous visual properties are confounded in everyday life: When number changes, its continuous visual properties also change. It could therefore be efficient to rely on the visual properties to judge number. The current consensus, however, holds that number is processed independent of its visual properties. In this study, we pitched these two opposing theories against each other. We used electroencephalography to look at the components suggested to process number. The first experiment showed that number and visual cues affect the N1 and/or the P2 component. To disentangle number and visual processes, we controlled the visual cues in the second experiment. Now, no number-related effects were present. When the data were reorganized according to visual cue instead of number size, N1 and P2 effects emerged. These results argue against the idea that number is processed independent of its continuous visual variables.
Authors:
Titia Gebuis; Bert Reynvoet
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-9
Journal Detail:
Title:  Psychophysiology     Volume:  -     ISSN:  1540-5958     ISO Abbreviation:  Psychophysiology     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Society for Psychophysiological Research.
Affiliation:
Laboratory of Experimental Psychology, University of Leuven, Leuven, Belgium.
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