Curso temporal en la discriminación de la sonrisamedidas de latencia sacádica

  1. Andrés Fernández-Martín 1
  2. Manuel Gutiérrez-Calvo 2
  1. 1 Universidad de la Laguna, Departamento de Psicología Cognitiva
  2. 2 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

Revista:
Psicológica: Revista de metodología y psicología experimental

ISSN: 1576-8597

Año de publicación: 2012

Volumen: 33

Número: 2

Páginas: 319-343

Tipo: Artículo

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Otras publicaciones en: Psicológica: Revista de metodología y psicología experimental

Resumen

Utilizando medidas de latencia sacádica de los ojos en una tarea de elección binaria, investigamos el curso temporal de la discriminación entre (a) caras alegres genuinas (boca sonriente y ojos alegres), (b) caras con expresiones no alegres (sin sonrisa ni ojos alegres), y (c) caras con expresiones mixtas (boca sonriente, pero ojos no alegres). El momento en el que los movimientos sacádicos correctos hacia la cara alegre genuina superan a los incorrectos hacia la cara distractora mixta o no alegre indica el inicio de la discriminación. Los resultados mostraron (a) discriminación temprana de las caras alegres respecto a las no alegres entre los 180 y los 240 ms; (b) ausencia de discriminación entre caras alegres y mixtas dentro de los primeros 600 ms en los que se producen los movimientos sacádicos; y (c) las diferencias mencionadas en discriminación están asociadas a la saliencia visual de la boca y de los ojos. Al ser la boca sonriente muy saliente, tanto en las caras alegres genuinas como en las mixtas, probablemente ensombrece la expresión de los ojos, dificultando así la discriminación entre las sonrisas genuinas y las falsas.

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Fuente de los datos: Dialnet