Manual cyclical activity as an exploratory tool in neonates |
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| Affiliation: | 1. Laboratoire Psychologie et Neurosciences de la Cognition, Université de Rouen, EA 1780, F-76821 Mont Saint Aignan, France;2. Laboratoire de Psychobiologie du Développement, Ecole Pratique des Hautes Etudes, F-75005 Paris, France;1. Santé publique France, Direction des maladies non transmissibles et traumatismes, 94410 Saint-Maurice, France;2. Institut universitaire romand de santé au travail (IST), université de Lausanne, Lausanne, Suisse;1. Universität Passau, Innstr. 33a, 94030 Passau, Germany;2. Universität Bern, Fabrikstrasse 8, 3008 Bern, Switzerland;3. FU Berlin, Garystr. 55, 14195 Berlin, Germany;4. Universität Münster, Bispinghof 9-14, 48143 Münster, Germany;1. Laboratory URECA, EA 1059, University Lille North of France, Villeneuve d’Ascq, France;2. INSERM CIC-IT 1403 « Biocapteur et e-Santé », CHRU de Lille, France;3. Department of Psychiatry, Hôpital Saint Vincent de Paul, GHICL, Lille, France;1. Nantes université, université Angers, laboratoire de psychologie des Pays-de-la-Loire (LPPL EA 4638), 44000 Nantes, France;2. Laboratoire de psychologie des Pays-de-la-Loire, LPPL EA 4638, SFR Confluences, université Angers, Nantes université, Maison de la recherche Germaine Tillion, 5, bis boulevard Lavoisier, 49045 Angers cedex 01, France |
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| Abstract: | Haptic texture perception was investigated in 3-day-old infants. Following a habituation sequence with a smooth or granular object, babies received a haptic test during which they held either the familiar or a new textured object. Two dependent measures were recorded: (1) Holding time was used to assess habituation as well as reaction to novelty and (2) hand pressure frequency exerted on the object was used to investigate neonates’ capacity to adjust their manipulation to the texture of objects. Both measures revealed neonates’ capacity to haptically perceive the texture of objects. From the results, it can be concluded that neonate’s manual cyclical activity recorded by HPF is a primary exploratory tool that is both necessary and sufficient to obtain knowledge about texture. |
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