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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