2007 volume 36(3) pages 335 – 354
doi:10.1068/p5633

Cite as:
Deco G, Heinke D, 2007, "Attention and spatial resolution: A theoretical and experimental study of visual search in hierarchical patterns" Perception 36(3) 335 – 354

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Attention and spatial resolution: A theoretical and experimental study of visual search in hierarchical patterns

Gustavo Deco, Dietmar Heinke

Received 9 November 2005, in revised form 17 January 2006; published online 28 February 2007

Abstract. Our aim has been to study visual search in hierarchical patterns through a computational neuroscience perspective. In this way we were able to analyse the relationship between the global precedence effect and attention. The theoretical part of our investigations extended a model built upon the biased-competition hypothesis. An important feature of this extension is that different spatial frequencies are processed with different time constants. Simulations with this model resulted in specific predictions that were confirmed with a novel visual-search experiment utilising hierarchical patterns. Both experiment and simulations suggest that the global-precedence effect prevails under the condition of visual search.

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