The sensory components of high-capacity iconic memory and visual working memory

Bradley, Claire and Pearson, Joel (2012) The sensory components of high-capacity iconic memory and visual working memory. Frontiers in Psychology, 3 SEP: . doi:10.3389/fpsyg.2012.00355

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ515058_OA.pdf Full text (open access) application/pdf 1.37MB 0

Author Bradley, Claire
Pearson, Joel
Title The sensory components of high-capacity iconic memory and visual working memory
Journal name Frontiers in Psychology   Check publisher's open access policy
ISSN 1664-1078
Publication date 2012-09-01
Year available 2012
Sub-type Article (original research)
DOI 10.3389/fpsyg.2012.00355
Open Access Status DOI
Volume 3
Issue SEP
Total pages 8
Place of publication Lausanne, Switzerland
Publisher Frontiers Research Foundation
Language eng
Formatted abstract
Early visual memory can be split into two primary components: a high-capacity, short-lived iconic memory followed by a limited-capacity visual working memory that can last many seconds. Whereas a large number of studies have investigated visual working memory for low-level sensory features, much research on iconic memory has used more “high-level” alphanumeric stimuli such as letters or numbers. These two forms of memory are typically examined separately, despite an intrinsic overlap in their characteristics. Here, we used a purely sensory paradigm to examine visual short-term memory for 10 homogeneous items of three different visual features (color, orientation and motion) across a range of durations from 0 to 6 s. We found that the amount of information stored in iconic memory is smaller for motion than for color or orientation. Performance declined exponentially with longer storage durations and reached chance levels after ∼2 s. Further experiments showed that performance for the 10 items at 1 s was contingent on unperturbed attentional resources. In addition, for orientation stimuli, performance was contingent on the location of stimuli in the visual field, especially for short cue delays. Overall, our results suggest a smooth transition between an automatic, high-capacity, feature-specific sensory-iconic memory, and an effortful “lower-capacity” visual working memory.
Keyword Early visual memory
Iconic memory
Low-level visual features
Visual working memory
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Brain Institute Publications
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Mon, 20 Mar 2017, 17:09:35 EST by Ms Kate Rowe on behalf of Learning and Research Services (UQ Library)