Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/18127
Title: Dissociable roles of different types of working memory load in visual detection
Authors: Konstantinou, Nikos 
Lavie, Nilli 
Major Field of Science: Medical and Health Sciences
Field Category: Other Medical Sciences
Keywords: Executive cognitive control;Visual working memory;Perceptual load;Selective attention;Visual detection
Issue Date: Aug-2013
Source: Journal of Experimental Psychology: Human Perception and Performance, 2013, vol. 39, no. 4, pp. 919-924
Volume: 39
Issue: 4
Start page: 919
End page: 924
Journal: Journal of Experimental Psychology: Human Perception and Performance 
Abstract: We contrasted the effects of different types of working memory (WM) load on detection. Considering the sensory-recruitment hypothesis of visual short-term memory (VSTM) within load theory (e.g., Lavie, 2010) led us to predict that VSTM load would reduce visual-representation capacity, thus leading to reduced detection sensitivity during maintenance, whereas load on WM cognitive control processes would reduce priority-based control, thus leading to enhanced detection sensitivity for a low-priority stimulus. During the retention interval of a WM task, participants performed a visual-search task while also asked to detect a masked stimulus in the periphery. Loading WM cognitive control processes (with the demand to maintain a random digit order [vs. fixed in conditions of low load]) led to enhanced detection sensitivity. In contrast, loading VSTM (with the demand to maintain the color and positions of six squares [vs. one in conditions of low load]) reduced detection sensitivity, an effect comparable with that found for manipulating perceptual load in the search task. The results confirmed our predictions and established a new functional dissociation between the roles of different types of WM load in the fundamental visual perception process of detection.
ISSN: 19391277
DOI: 10.1037/a0033037
Rights: © American Psychological Association
Type: Article
Affiliation : University of Cyprus 
University College London 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

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