Document Detail

Factors influencing manual discrimination of orientations in 5-month-old infants.
MedLine Citation:
PMID:  19323135     Owner:  NLM     Status:  MEDLINE    
Factors affecting manual discrimination of spatial orientations and orientation preferences in 5-month-old infants have been investigated by using a familiarisation/reaction to novelty procedure. In the first experiment we explored whether the 'vertical preference' observed by Gentaz and Streri (2004 Journal of Cognitive Neuroscience 16 1-7) and Kerzerho et al (2005 Neuro Report 16 1833-1837) is an intrinsic preference or whether it is due to familiarisation. In the second experiment we examined whether the magnitude of angular deviation to the vertical influences the direction of preference. Results showed that when both gravitational vertical and body axes were aligned, the intrinsic 'vertical preference' exists when the angular difference between the two orientations was 10 degrees. When the angular deviation from the vertical was greater than 10 degrees, the novel orientation was preferred. This modification of orientation preference in the manual discrimination of orientation by 5-month-old infants is discussed in relation to the magnitude of the angular deviation to the gravitational vertical and the spatial reference cues available in each condition.
St??phanie Kerzerho; Edouard Gentaz; Arlette Streri
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Perception     Volume:  38     ISSN:  0301-0066     ISO Abbreviation:  Perception     Publication Date:  2009  
Date Detail:
Created Date:  2009-03-27     Completed Date:  2010-01-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372307     Medline TA:  Perception     Country:  England    
Other Details:
Languages:  eng     Pagination:  44-51     Citation Subset:  IM    
Laboratoire Psychologie de la Perception, CNRS, Universit?? Paris Descartes, 45 rue des Saint-P??res, F 75006 Paris, France.
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MeSH Terms
Analysis of Variance
Choice Behavior*
Discrimination (Psychology) / physiology*
Infant Behavior*
Orientation / physiology
Space Perception / physiology*

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