Document Detail

Global and local processing of hierarchical visual stimuli in tufted capuchin monkeys (Cebus apella).
MedLine Citation:
PMID:  12735359     Owner:  NLM     Status:  MEDLINE    
Capuchin monkeys' (Cebas apella) relative accuracy in the processing of the global shape or the local features of hierarchical visual stimuli was assessed. Three experiments are presented featuring manipulations of the arrangement and the density of the local elements of the stimuli. The results showed a clear advantage for local level processing in this species, which is robust under manipulations of the density of the local elements of the stimuli. By contrast the density of the component elements linearly affected accuracy in global processing. These findings, which support those from other studies in which a local superiority emerged in animals, challenge the generality of early claims concerning the adaptive value of global advantage in the processing of hierarchical visual patterns.
Giovanna Spinozzi; Carlo De Lillo; Valentina Truppa
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of comparative psychology (Washington, D.C. : 1983)     Volume:  117     ISSN:  0735-7036     ISO Abbreviation:  J Comp Psychol     Publication Date:  2003 Mar 
Date Detail:
Created Date:  2003-05-08     Completed Date:  2003-09-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8309850     Medline TA:  J Comp Psychol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  15-23     Citation Subset:  IM    
Istituto di Scienze e Tecnologie della Cognizione, Consiglio Nazionale delle Ricerche, Reparto di Psicologia Comparata, Rome, Italy.
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MeSH Terms
Behavior, Animal / physiology
Form Perception / physiology*
Photic Stimulation
Visual Perception / physiology*

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