Coordenação intermembros no alcance de objetos de lactentes típicos e com síndrome de Down
Research has shown that bimanual actions are demonstrative of the functional brain development; thus it is relevant to investigate how interlimb coordination develops in typically-developing infants, as well as in infants with impaired brain organization, such as in the presence of Down syndrome (DS...
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| Tipo de documento: | dissertação |
| Estado: | Versão publicada |
| Data de publicação: | 2012 |
| País: | Brasil |
| Recursos: | Universidade Federal de São Carlos (UFSCAR) |
| Repositório: | Repositório Institucional da UFSCAR |
| Idioma: | português |
| OAI Identifier: | oai:repositorio.ufscar.br:20.500.14289/5294 |
| Acesso em linha: | https://repositorio.ufscar.br/handle/20.500.14289/5294 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Educação especial Desenvolvimento motor Alcance manual Down, Síndrome de Preensão Coordenação intermembrosapreensão Tamanho do objeto Reaching Interlimb coordination Down syndrome Grasping Object size CIENCIAS DA SAUDE::FISIOTERAPIA E TERAPIA OCUPACIONAL |
| Resumo: | Research has shown that bimanual actions are demonstrative of the functional brain development; thus it is relevant to investigate how interlimb coordination develops in typically-developing infants, as well as in infants with impaired brain organization, such as in the presence of Down syndrome (DS). Objectives: The aims of this study were as follows: 1) to study the development of interlimb coordination in typically-developing infants (TD) and in infants with DS while reaching and grasping objects with different sizes; and 2) to investigate changes in the interlimb relations during the stages after reaching emergence. Methods: Reaching movements performed by 8 TD infants and 7 infants with DS were monthly recorded between the ages of 4 and 8 months. The frequency of categories used during movement initiation, object touching and grasping; the frequency of reaching and the contribution of each arm were calculated. The effects of object size and of the time after reaching onset were analyzed in intra- and inter-group comparisons. Results: TD infants were able to change the configurations used in the movement initiation, object touching and grasping; their interlimb coordination changed from synchronic reaches to asynchrony or unimanual trajectories, based on object properties. Infants with DS only changed their grasping configurations; the strategies they used were not optimally adjusted to object properties; difficulties to grasp the objects were also evident. Conclusions: With the experience in reaching, interlimb coordination in TD infants is increasingly modulated by object properties in an anticipatory way. Infants with DS seem to need a longer time to use sensory information and to modulate reaching and grasping configurations. |
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