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The vocal repertoire of preterm infants: Characteristics and possible applications
Affiliation:1. Univ Rennes, Normandie Univ, CNRS, EthoS (Ethologie animale et humaine) - UMR 6552, F-35000, Rennes, France;2. Centre Hospitalier Régional Universitaire, Pôle de la Femme, de la Mère et de l''Enfant, Brest, France;3. Université de Bretagne Occidentale, Faculté de Médecine et des Sciences de la Santé, Laboratoire de Neurosciences de Brest - EA 4685, Brest, France;1. Department of Psychology, University of Potsdam, Germany;2. Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany;1. Department of Psychology, Lehigh University, United States;2. Department of Psychology, New York University, United States;1. Department of Brain Repair and Rehabilitation, University College London, London, UK;2. Wellcome Trust Centre for Neuroimaging, University College London, London, UK;3. Institute of Cognitive Neuroscience, University College London, London, UK;4. Department of Experimental Psychology, University of Oxford, Oxford, UK;5. Facultad de Psicologia, Pontificia Universidad Javeriana, Bogota, Colombia;1. HRL Laboratories, LLC, Malibu, CA, United States;2. Palo Alto Research Center, Palo Alto, CA, United States;1. The FinnBrain Birth Cohort Study, Turku Brain and Mind Center, Institute of Clinical Medicine, University of Turku, Finland;2. Department of Psychology, University of Turku, Finland;3. Infant Cognition Laboratory, Center for Child Health Research, School of Medicine, University of Tampere, Finland;4. Genomics and Biobank Unit, Finnish Institute for Health and Welfare, Helsinki, Finland;5. Department of Psychiatry and SleepWell Research Program, Faculty of Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland;6. Charité University of Medicine Berlin, Department of Medical Psychology, Berlin, Germany;7. Turku University Hospital and University of Turku, Department of Psychiatry, Finland;8. Turku University Hospital and University of Turku, Department of Child Psychiatry, Finland
Abstract:We investigated infants’ capacities to express themselves orally at very early developmental stages. Most reports focus on crying when in pain or hungry. We evaluated young preterm infants’ spontaneous vocal production in non-painful contexts. We identified a vocal repertoire composed of nine types of vocalisations. High-pitched sounds were associated with relaxed postures, implying a positive valence, whereas long low-pitched vocalisations, associated more with grimaces and muscle tensions, appeared to have a more negative valence. Infants’ vocalisations were useful indicators of their internal state in two situations (when exposed to clothing constraints and environmental noises).
Keywords:Prematurity  Newborns  Vocalisations  Comfort  Discomfort
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