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Discrimination of Biomechanically Possible and Impossible Hand Movements at Birth
Authors:Elena Longhi  Irene Senna  Nadia Bolognini  Hermann Bulf  Paolo Tagliabue  Viola Macchi Cassia  Chiara Turati
Affiliation:1. University of Milano‐Bicocca;2. Bielefeld University;3. University of Milano‐BicoccaIstituto Auxologiico Italiano;4. Milan Center for Neuroscience;5. San Gerardo Hospital
Abstract:The development of human body perception has long been investigated, but little is known about its early origins. This study focused on how a body part highly relevant to the human species, namely the hand, is perceived a few days after birth. Using a preferential‐looking paradigm, 24‐ to 48‐hr‐old newborns watched biomechanically possible and impossible dynamic hand gestures (Experiment 1, N = 15) and static hand postures (Experiment 2, N = 15). In Experiment 1, newborns looked longer at the impossible, compared to the possible, hand movement, whereas in Experiment 2 no visual preference emerged. These findings suggest that early in life the representation of the human body may be shaped by sensory‐motor experience.
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