caa a22 4500 445351950 CHVBK 20180317142846.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00221-011-2672-5 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2672-5 Bimanual strategies for object retrieval in infants and young children [Elektronische Daten] [Deirdre Birtles, Shirley Anker, Janette Atkinson, Rhiannon Shellens, Alexandra Briscoe, Melissa Mahoney, Oliver Braddick] Age differences in goal-directed bimanual coordination were studied in typically developing infants aged 9-29months, compared to a group of children aged 4-6years and a group of adults, using an object retrieval task. This task required one hand to open and hold the lid of a transparent box, while the second hand retrieved a small toy from inside the box. Well-coordinated retrieval strategies with differentiated use of the two hands were not established in the majority of infants until 18months of age. Temporal analysis of the hand actions revealed that, unlike adults who perform the task with close synchronization of the hands at the start, the infants performed the task sequentially and did not activate the second hand until the first hand had started to lift the lid. The children's hand preferences for the two-hand actions also contrasted with those of adults. In children aged 27-29months and 4-6years, there was a preference for using the right-hand to lift the lid while in right-handed adults, the reverse pattern was observed. The results suggest that although bimanual coordination starts to develop in the second year of life, the adult pattern of performance on this task is not observed before 6years of age. It is likely that further maturation of the brain networks involved in bimanual coordination, and in particular functional interhemispheric transfer via the corpus callosum, is required before automatization of bimanual hand actions is achieved. Springer-Verlag, 2011 Bimanual coordination nationallicence Human infants nationallicence Goal synchronization nationallicence Hand preference nationallicence Birtles Deirdre Division of Psychology and Language Sciences, University College London, 26 Bedford Way, WC1E 6BT, London, UK aut Anker Shirley Division of Psychology and Language Sciences, University College London, 26 Bedford Way, WC1E 6BT, London, UK aut Atkinson Janette Division of Psychology and Language Sciences, University College London, 26 Bedford Way, WC1E 6BT, London, UK aut Shellens Rhiannon UCL Medical School, University College London, Gower Street, WC1E 6BT, London, UK aut Briscoe Alexandra UCL Medical School, University College London, Gower Street, WC1E 6BT, London, UK aut Mahoney Melissa UCL Medical School, University College London, Gower Street, WC1E 6BT, London, UK aut Braddick Oliver Department of Experimental Psychology, University of Oxford, South Parks Road, OX1 3UD, Oxford, UK aut Experimental Brain Research Springer-Verlag 211/2(2011-06-01), 207-218 0014-4819 211:2<207 2011 211 221 https://doi.org/10.1007/s00221-011-2672-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2672-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Birtles Deirdre Division of Psychology and Language Sciences, University College London, 26 Bedford Way, WC1E 6BT, London, UK aut NATIONALLICENCE 700 1- Anker Shirley Division of Psychology and Language Sciences, University College London, 26 Bedford Way, WC1E 6BT, London, UK aut NATIONALLICENCE 700 1- Atkinson Janette Division of Psychology and Language Sciences, University College London, 26 Bedford Way, WC1E 6BT, London, UK aut NATIONALLICENCE 700 1- Shellens Rhiannon UCL Medical School, University College London, Gower Street, WC1E 6BT, London, UK aut NATIONALLICENCE 700 1- Briscoe Alexandra UCL Medical School, University College London, Gower Street, WC1E 6BT, London, UK aut NATIONALLICENCE 700 1- Mahoney Melissa UCL Medical School, University College London, Gower Street, WC1E 6BT, London, UK aut NATIONALLICENCE 700 1- Braddick Oliver Department of Experimental Psychology, University of Oxford, South Parks Road, OX1 3UD, Oxford, UK aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 211/2(2011-06-01), 207-218 0014-4819 211:2<207 2011 211 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer