Browsing by Person "Logie, Robert H."

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Behavioural evidence for separating components within visuo-spatial working memory
(Springer, 2007) Darling, Stephen; Della Sala, Sergio; Logie, Robert H.
Several different sources of evidence support the idea that visuo-spatial working memory can be segregated into separate cognitive subsystems. However, the nature of these systems remains unclear. Recently we reported data from neurological patients suggesting that information about visual appearance is retained in a different subsystem from information about spatial location. In this paper we report latency data from neurologically intact participants showing an experimental double dissociation between memory for appearance and memory for location. This was achieved by use of a selective dual task interference technique. This pattern provides evidence supporting the segregation of visuo-spatial memory between two systems, one of which supports memory for stimulus appearance and the other which supports memory for spatial location.
Dissociation between appearance and location within visuo-spatial working memory
(2009-03) Darling, Stephen; Sala, Sergio; Logie, Robert H.
Previous research has demonstrated separation between systems supporting memory for appearance and memory for location. However, the interpretation of these results is complicated by a confound occurring because of the simultaneous presentation of objects in multiple-item arrays when assessing memory for appearance and the sequential presentation of items when assessing memory for location. This paper reports an experiment in which sequential or simultaneous modes of presentation were factorially manipulated with memory for visual appearance or memory for location. Spatial interference (tapping) or visual interference (dynamic visual noise) were presented during retention. Appearance versus location interacted with the type of interference task, but mode of presentation did not. These results are consistent with the view that different subsystems within visuo-spatial working memory support memory for appearance and memory for location. 2008 The Experimental Psychology Society.
Items on the left are better remembered
(2010-05) Della Sala, Sergio; Darling, Stephen; Logie, Robert H.
Neurologically intact individuals show a spatial processing bias in perception tasks, specifically showing a bias towards the left in bisecting lines. We present evidence for a novel finding that a leftwards bias occurs in short-term memory for recently presented arbitrary bindings of visual features. Three experiments are reported, two of which involve a total of over 60,000 participants with a small number of trials for each. Experiment 3 involved a larger number of trials for each of 144 participants. Participants reproduced from immediate memory arrays of shape-colour-location bindings. In all three experiments, significantly more errors were observed in reproduction of items presented on the right of the array than on the left. Results could not be accounted for by perceptual errors, or by order of presentation or order of reproduction. Findings suggest that items presented on the left are better remembered, indicating a spatial asymmetry in forming or retrieving feature bindings in visual short-term memory.
Neuropsychological evidence for separating components of visuo-spatial working memory
(2006-02) Darling, Stephen; Della Sala, Sergio; Logie, Robert H.; Cantagallo, A.
There is increasing evidence to support the idea that visuo-spatial working memory can be segregated into separate cognitive subsystems. However, the nature of these systems remains unclear. In this paper we report data from two brain injured patients suggesting that information about visual appearance is retained in a different subsystem from information about spatial location, and that this differential processing can be observed when the style of presentation (sequential or simultaneous) is controlled.
Representational pseudoneglect in line bisection
(Psychonomic Society, 2012-10) Darling, Stephen; Logie, Robert H.; Della Sala, Sergio
Representational pseudoneglect refers to a bias towards the left side of space that occurs when visual information is remembered. Recently there have been a number of demonstrations of such representational pseudoneglect. In the current paper we report an experiment where we adopted the classic line bisection paradigm to study representational pseudoneglect. Participants bisected horizontal lines that were shown in extra-personal space. When lines were visible on the screen, there was no evidence of any leftward bias. However, when lines were bisected from memory, participants demonstrated a clear bias to the left. This is the first demonstration of a leftward bias in bisection of remembered visually presented lines.