Document Detail

Rhesus monkeys (Macaca mulatta) map number onto space.
MedLine Citation:
PMID:  24762923     Owner:  NLM     Status:  Publisher    
Humans map number onto space. However, the origins of this association, and particularly the degree to which it depends upon cultural experience, are not fully understood. Here we provide the first demonstration of a number-space mapping in a non-human primate. We trained four adult male rhesus macaques (Macaca mulatta) to select the fourth position from the bottom of a five-element vertical array. Monkeys maintained a preference to choose the fourth position through changes in the appearance, location, and spacing of the vertical array. We next asked whether monkeys show a spatially-oriented number mapping by testing their responses to the same five-element stimulus array rotated ninety degrees into a horizontal line. In these horizontal probe trials, monkeys preferentially selected the fourth position from the left, but not the fourth position from the right. Our results indicate that rhesus macaques map number onto space, suggesting that the association between number and space in human cognition is not purely a result of cultural experience and instead has deep evolutionary roots.
Caroline B Drucker; Elizabeth M Brannon
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-4-21
Journal Detail:
Title:  Cognition     Volume:  132     ISSN:  1873-7838     ISO Abbreviation:  Cognition     Publication Date:  2014 Apr 
Date Detail:
Created Date:  2014-4-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0367541     Medline TA:  Cognition     Country:  -    
Other Details:
Languages:  ENG     Pagination:  57-67     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Elsevier B.V. All rights reserved.
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