Browsing by Subject "Attention"
Now showing items 1-8 of 8
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Are there anisotropies in covert and overt visual orienting?
(2010-09-01)Two recent studies suggest that Inhibition of Return (IOR) varies in magnitude as a function of target location for overt orienting tasks but not covert orienting tasks. Unfortunately, methodological differences between ... -
DEVISING A MODIFIED FLANKER TASK TO OBTAIN EVENT RELATED BRAIN POTENTIALS FOR THE ASSESSMENT OF ATTENTION
(2014-08-21)Electrophysiological indices of attention provide insight into the neural processes underlying attention. These indices include the P300 and its sub-components, the P3a and P3b, which are event related potentials (ERPs) ... -
Exploring the Dissociations between Overt and Covert Mechanisms of Spatial Attention and Inhibition of Return
(2013-09-06)Prompted by oculomotor theories of attention, the present experiments explore the role of saccade activation in the generation of two cueing effects: exogenous capture (Experiment 1) and inhibition of return (IOR; Experiment ... -
Inhibition of Return for Endogenous Colour Cues
Inhibition of Return (IOR) is a phenomenon of attention where responses are slower toward a recently attended location, compared with novel locations. Recently, coloured signals have been used endogenously (MacInnes, Kruger ... -
INHIBITORY CONSEQUENCES OF GRASPING MOVEMENTS: IS GRASPING THE SAME AS REACHING?
Studies have shown that past actions can impact present and future actions. More specifically, inhibition of return (IOR) is a phenomenon in which participants respond slower to previously attended areas compared to novel ... -
IS INTERFERENCE IN GRASPING PRODUCED WHEN COVERT ATTENTION IS DIRECTED TO NON-TARGET OBJECTS?
Previous literature has shown that when covert attention is directed to a non-target object while grasping a target fruit, the non-target’s size can influence the peak grip aperture for the target fruit (Castiello, 1996). ... -
On the inhibitory consequences of visuospatial orienting: Inhibition of return?
Responding is typically slowest toward (an “output” bias) or about (an “input” bias) targets presented at the location indicated by a spatially uninformative visual transient (a “cue”) when the onset asynchrony between the ... -
The Role of Attentional Control in Working Memory: Effects of Cognitive Load, Aging, and Stroke
(2015-01-16)Working memory is a limited capacity system that relies on attentional control mechanisms to filter out task irrelevant information for optimal performance (Broadbent, 1958). The aim of this dissertation was to investigate ...
