The Sensitive Period for Tactile Remapping Does Not Include Early Infancy.

• Autores: Elena Azañón, Karla Camacho, Marta Morales, Matthew R. Longo
• Localización: Child development, ISSN 0009-3920, Vol. 89, Nº. 4, 2018, págs. 1394-1404
• Idioma: inglés
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• Resumen

  • Visual input during development seems crucial in tactile spatial perception, given that late, but not congenitally, blind people are impaired when skin-based and tactile external representations are in conflict (when crossing the limbs). To test whether there is a sensitive period during which visual input is necessary, 14 children (age = 7.95) and a teenager (LM; age = 17.38) deprived of early vision by cataracts, and whose sight was restored during the first 5 months and at age 7, respectively, were tested. Tactile localization with arms crossed and uncrossed was measured. Children showed a crossing effect indistinguishable from a control group (Ns = 28, age = 8.24), whereas LM showed no crossing effect (Ns controls = 14, age = 20.78). This demonstrates a sensitive period which, critically, does not include early infancy. [ABSTRACT FROM AUTHOR]