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Computational Neuroscience of Vision$
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Edmund Rolls and Gustavo Deco

Print publication date: 2001

Print ISBN-13: 9780198524885

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780198524885.001.0001

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Visual search: Attentional neurodynamics at work

Visual search: Attentional neurodynamics at work

(p.353) 10 Visual search: Attentional neurodynamics at work
Computational Neuroscience of Vision

Edmund T. Rolls

Oxford University Press

This chapter aims to demonstrate that the attentional architecture described in the previous chapter performs covert searches across the visual field in parallel and can show two experimentally observed modes of visual attention, namely: serial focal attention, and the parallel spread of attention over space. It explores the interplay between microscopic neuronal dynamics and systems-level functional behaviour in the context of visual search, and shows that it is possible to build a neural system for visual search. The chapter also provides an extension of the computational multi-area model in order to understand the neurodynamics underlying much more complex cases of visual search tasks that require the binding of different feature dimensions.

Keywords:   attentional architecture, covert searches, visual field, visual attention, serial focal attention, neuronal dynamics

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