'Attentional guidance by single-colour and multiple-colour search templates'

Series Name Psychology Invited Speaker
Speaker Anna Grubert PhD, Department of Psychological Sciences Birkbeck College, University of London
Type Lectures & Talks
When 08 May 2014, 04:00PM - 05:00PM
Venue Frank & Katherine May Lecture Theatre, Henry Wellcome
Open To University staff and students
For Bookings Contact Dr Girogio Fuggetta gf43@le.ac.uk

The attentional selection of currently relevant visual events is guided in a top-down fashion by the featural representations of a looked-for object. These representations are referred to as attentional (search) templates and are thought to reside in visual working memory. However, currently we have to deal with conflicting findings about the actual capacity of such attentional templates: While some experiments suggest very limited storage capacity of attentional templates, others show that attentional control can easily be set for different visual features simultaneously. In this talk I will present three visual search experiments in which I measured behavioural and electrophysiological markers of top-down guided attentional selection. By means of these experiments I will demonstrate qualitative differences in the guidance of attention during search for multiple and single colours. I will conclude that top-down control is less efficient when attention is guided by multiple-colour relative to single-colour search templates.

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