The inter-relations between spatial and object factors during sustained visual attention to dynamic objects

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ISSN: 0211-2159
E-ISSN: 1576-8597

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Universitat de València
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The main goal of our research was to investigate attention to dynamic visual stimuli. Observers were instructed to attentively track a variable number of moving visual objects for a sustained period of several minutes. At random intervals, a target stimulus of brief duration was presented inside one of these objects and observers were required to identify it. The number of relevant objects to be tracked and the grouping strength among objects that had to be attended, operationalized as the size of relative area among those objects, were manipulated. The results indicated that only a single object could be attentively tracked, unless the objects formed a perceptual group. In this case, more than one dynamic object could be attended, but effectiveness of attention would be mediated by perception of the spatial relations among them
El objetivo principal de esta investigación era el estudio de la atención a estímulos visuales dinámicos. Los observadores tenían que atender a un número variable de objetos en movimiento durante un periodo sostenido de varios minutos. Un estímulo objetivo de corta duración aparecía, a intervalos al azar, dentro de alguno de esos objetos. La tarea del observador era identificar este estímulo. Las variables manipuladas fueron el número de objetos relevantes y la fuerza del agrupamiento perceptual entre ellos, medida por el tamaño del espacio limitado por esos objetos. Los resultados indican que nuestra atención solo puede rastrear un objeto de cada vez, a menos que los objetos atendidos formen un grupo perceptivo. En ese caso, podríamos atender a más de un objeto simultáneamente, pero los efectos dependerían de la percepción de las relaciones espaciales entre ellos

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Blanco, M. J., Leirós, L. I., & Soto, D. (2009). The inter-relations between spatial and object factors during sustained visual attention to dynamic objects. Psicológica, 30(2), 271-285

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This research was supported by the grants SEJ2004-00541/PSIC and SEJ2007-61039/PSIC from the Ministerio de Educación y Ciencia of Spain to Manuel J. Blanco

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© 2009 Manuel J. Blanco, Luz I. Leirós, and David Soto. This is an open access article licensed under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/4.0/). The users are free to share (copy, distribute and transmit the contribution) under the following conditions: 1. they must attribute the contribution in the manner specified by the author or licensor, 2. they may not use this contribution for commercial purposes, 3. they may not alter, transform, or build upon this work