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Adquisición gradual de la capacidad combinatoria vocal en aves cantoras y bebés humanos

Dina Lipkind¹, Gary F Marcus, Douglas K Bemis

¹Department of Psychology, Hunter College, City University of New York, New York, NY 10065, USA. dina.lipkind@gmail.com

|May 31, 2013

Resumen

Las especies que aprenden la voz, incluidos los humanos, desarrollan habilidades vocales secuenciales paso a paso. Esta investigación revela un proceso común y gradual para la adquisición de nuevas transiciones vocales entre especies, impactando el desarrollo de la canción y el habla.

Área de la Ciencia:

Psicología Comparada y Psicología Comparada.
Biología del desarrollo Biología del desarrollo.
La bioacústica es la bioacústica.

Sus antecedentes:

El aprendizaje vocal es crucial para el lenguaje humano y el canto de las aves.
Los orígenes del desarrollo de la capacidad combinatoria vocal siguen siendo en gran medida desconocidos.

Objetivo del estudio:

Investigar el desarrollo ontogenético de la capacidad combinatoria vocal.
Identificar patrones comunes en la adquisición de secuencias vocales entre especies.

Principales métodos:

Manipulación experimental de secuencias de canciones en pinzones cebra juveniles (Taeniopygia guttata).
Análisis del desarrollo natural de la canción en los pinzones bengalíes (Lonchura striata domestica).
Estudio observacional de las transiciones vocales en bebés humanos pre-linguales.

Principales resultados:

Se observó un patrón común y gradual de adquisición de transiciones vocales en las tres especies.
Los pinzones cebra aprendieron nuevos órdenes de sílabas a través de la adquisición gradual de transiciones en pares.
Los pinzones bengalíes y los bebés humanos también demostraron un desarrollo gradual de la sintaxis vocal y las secuencias de balbuceo.

Conclusiones:

La capacidad combinatoria vocal se desarrolla a través de un proceso generativo conservado y gradual.
Esta adquisición gradual de transiciones vocales en pares puede explicar los desafíos en el desarrollo de secuencias vocales complejas en humanos.

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