Influencia de la simetría y la curvilinealidad en el procesamiento de estímulos cerrados
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Colegio Oficial de Psicólogos del Principado de Asturias
Abstract
El procesamiento de características como el color o la orientación de línea puede realizarse con rapidez
y precisión, y sin que parezca intervenir la atención focalizada. Existe controversia sobre si el cierre
puede procesarse con una eficiencia similar. En este estudio, investigamos el procesamiento de estímulos
cerrados y la influencia sobre ese procesamiento, de las características de simetría y curvilinealidad.
En un experimento de segregación de textura y dos experimentos de búsqueda visual, los participantes
debían discriminar figuras cerradas de figuras abiertas, mientras la forma de los estímulos
variaba a lo largo de los experimentos. La realización fue bastante eficiente cuando los estímulos cerrados
eran también simétricos y curvilíneos, pero empeoraba cuando carecían de esas propiedades.
Estos resultados sugieren que el cierre no se procesa por sí mismo de modo eficiente, sino que algunas
formas cerradas pueden discriminarse con rapidez y precisión, mientras otras formas cerradas no
Processing of featur es as color or line orientation can be carried out with speed and accuracy, and apparently without focused attention. There is controversy about whether closure can be processed with similar efficiency. In this study, we investigated processing of closed stimuli and the influence on that processing, of featur es of symmetry and curvilinear ity. In an experiment of texture segregation and two experiments of visual search, participants had to discriminate the closed from the open shapes, while the form of stimuli varied during the experiments. Performance was quite efficient when closed stimuli were also symmetrical and curvilinear, but it got worse when they lacked those properties. These results suggest that closure is not processed by itself, in an efficient way, but some closed shapes can be discriminated with speed and accuracy, while other closed shapes can not
Processing of featur es as color or line orientation can be carried out with speed and accuracy, and apparently without focused attention. There is controversy about whether closure can be processed with similar efficiency. In this study, we investigated processing of closed stimuli and the influence on that processing, of featur es of symmetry and curvilinear ity. In an experiment of texture segregation and two experiments of visual search, participants had to discriminate the closed from the open shapes, while the form of stimuli varied during the experiments. Performance was quite efficient when closed stimuli were also symmetrical and curvilinear, but it got worse when they lacked those properties. These results suggest that closure is not processed by itself, in an efficient way, but some closed shapes can be discriminated with speed and accuracy, while other closed shapes can not
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Álvarez, A., Blanco, M., & Leirós, L. (2002). Influencia de la simetría y la curvilinealidad en el procesamiento de estímulos cerrados. Psicothema, 14(3), 597-604
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Esta investigación fue subvencionada por la Xunta de Galicia, mediante la financiación del proyecto de investigación PGIDT01PXI21102PR
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