Journal
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-GENERAL
Volume -, Issue -, Pages -Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/xge0001427
Keywords
visual working memory; short-term memory; computational modeling; delayed estimation; mental representation
Categories
Ask authors/readers for more resources
Visual working memory can maintain both continuous-perceptual information and discrete-categorical information about memory items. The representation structure in working memory differs for different features, with a joint-representation structure for orientation and separate-representations structure for color and shape. Existing models fail to capture this distinction, leading to mischaracterization of memory precision.
Visual working memory maintains both continuous-perceptual information and discrete-categorical information about memory items. Both types of information are represented in working memory, but the representation structure remains unknown. Continuous and categorical information about a single stimulus could be represented separately, in two different representations. Alternatively, continuous and categorical information could be represented jointly as a single representation. To investigate this, we fitted two different computational models to delayed estimation data assuming either separate or joint representations of continuous and categorical information in working memory, for three different, commonly used features (orientation, color, and shape). Across a set of nine experiments, model fits clearly show that feature identity drives the representation structure, with a joint-representation structure for orientation, but a separate-representations structure for color and shape. This pattern was remarkably invariant across a variety of task contexts. Existing models miss this distinction, leading to mischaracterization of memory precision.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available