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Auteur (up) Pouydebat, E.; Reghem, E.; Borel, A.; Gorce, P. url  doi
openurl 
  Titre Diversity of grip in adults and young humans and chimpanzees (Pan troglodytes) Type Article scientifique
  Année 2011 Publication Behavioural Brain Research Revue Abrégée Behav Brain Res  
  Volume 218 Numéro 1 Pages 21-28  
  Mots-Clés Adult; Age Factors; Analysis of Variance; Animals; Child, Preschool; Functional Laterality/*physiology; Hand Strength/*physiology; Humans; Middle Aged; Motor Skills/*physiology; Pan troglodytes; Principal Component Analysis  
  Résumé Grasping is essential for primates in numerous behaviors. A variety of different grasping techniques are used for obtaining food. Among humans, several studies have shown that the properties of the objects such as the size or the form influence grasp patterns. In addition, other works have tested the individual variability through grasping strategies and age and several studies have revealed some similarities between great apes and humans in grip types. Finally, results on hand preference are still equivocal and, for non-human primates, object parameters and age effect are rarely tested together, even though it is a methodological aspect important to consider. The study sought to determine whether grip type varied according to the age of the subject, the species (human versus chimpanzee), the size of the object and the hand used. Frame-by-frame analysis of hand contact strategies and statistical results indicated that (1) adults of both species used fewer contact strategies than juveniles and that there was a greater variability of contacts for small than for large objects (2) young juvenile chimpanzees and human children follow a similar grip types development, i.e. more frequent use of precision grips with age (3) juvenile chimpanzees used all five categories of grip and the adults used the “thumb-fingerpad(s)” more than the “precision grips” in addition to the “power grip” and (4) a right hand preference was greater for the grasping of small objects with “precision grips” in adults for both species. These results are discussed in relationship with neurology, morphology and grasping evolution.  
  Adresse HandiBio, EA4322, Universite du Sud Toulon Var, BP 20132, 83957 La Garde, France. pouydeba@univ-tln.fr  
  Auteur institutionnel Thèse  
  Editeur Lieu de Publication Éditeur  
  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0166-4328 ISBN Médium  
  Région Expédition Conférence  
  Notes PMID:21074572 Approuvé pas de  
  Numéro d'Appel CNRS @ epouydebat @ collection 1337  
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